64665375146453 has 4 divisors (see below), whose sum is σ = 65761398454080. Its totient is φ = 63569351838828.

The previous prime is 64665375146413. The next prime is 64665375146483. The reversal of 64665375146453 is 35464157356646.

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 64665375146453 - 2¹⁸ = 64665374884309 is a prime.

It is a super-2 number, since 2×64665375146453² (a number of 28 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 64665375146453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64665375146413) 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, 548011653725 + ... + 548011653842.

It is an arithmetic number, because the mean of its divisors is an integer number (16440349613520).

Almost surely, 2^{64665375146453} is an apocalyptic number.

It is an amenable number.

64665375146453 is a deficient number, since it is larger than the sum of its proper divisors (1096023307627).

64665375146453 is a wasteful number, since it uses less digits than its factorization.

64665375146453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096023307626.

The product of its digits is 653184000, while the sum is 65.

The spelling of 64665375146453 in words is "sixty-four trillion, six hundred sixty-five billion, three hundred seventy-five million, one hundred forty-six thousand, four hundred fifty-three".