565020515550001 has 4 divisors (see below), whose sum is σ = 645737732057152. Its totient is φ = 484303299042852.

The previous prime is 565020515549953. The next prime is 565020515550103. The reversal of 565020515550001 is 100055515020565.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 565020515550001 - 2⁴³ = 556224422527793 is a prime.

It is a super-2 number, since 2×565020515550001² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (565020515550901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40358608253565 + ... + 40358608253578.

It is an arithmetic number, because the mean of its divisors is an integer number (161434433014288).

Almost surely, 2^{565020515550001} is an apocalyptic number.

It is an amenable number.

565020515550001 is a deficient number, since it is larger than the sum of its proper divisors (80717216507151).

565020515550001 is an equidigital number, since it uses as much as digits as its factorization.

565020515550001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80717216507150.

The product of its (nonzero) digits is 187500, while the sum is 40.

The spelling of 565020515550001 in words is "five hundred sixty-five trillion, twenty billion, five hundred fifteen million, five hundred fifty thousand, one".