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64553537741 = 711838357633
BaseRepresentation
bin111100000111101100…
…001101000011001101
320011121211212111020012
4330013230031003031
52024201201201431
645353330203005
74443461005640
oct740754150315
9204554774205
1064553537741
11254168753a0
1210616a23465
136119c5a414
1431a5537a57
151a2c3b922b
hexf07b0d0cd

64553537741 has 8 divisors (see below), whose sum is σ = 80482332864. Its totient is φ = 50301457920.

The previous prime is 64553537687. The next prime is 64553537749. The reversal of 64553537741 is 14773535546.

64553537741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64553537741 - 210 = 64553536717 is a prime.

It is a super-2 number, since 2×645535377412 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64553537741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64553537749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419178740 + ... + 419178893.

It is an arithmetic number, because the mean of its divisors is an integer number (10060291608).

Almost surely, 264553537741 is an apocalyptic number.

It is an amenable number.

64553537741 is a deficient number, since it is larger than the sum of its proper divisors (15928795123).

64553537741 is a wasteful number, since it uses less digits than its factorization.

64553537741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838357651.

The product of its digits is 5292000, while the sum is 50.

The spelling of 64553537741 in words is "sixty-four billion, five hundred fifty-three million, five hundred thirty-seven thousand, seven hundred forty-one".

Divisors: 1 7 11 77 838357633 5868503431 9221933963 64553537741