64172472750256 has 40 divisors (see below), whose sum is σ = 133981655187744. Its totient is φ = 29599633536000.

The previous prime is 64172472750251. The next prime is 64172472750311. The reversal of 64172472750256 is 65205727427146.

It is a self number, because there is not a number n which added to its sum of digits gives 64172472750256.

It is not an unprimeable number, because it can be changed into a prime (64172472750251) 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, 95658745 + ... + 96327256.

Almost surely, 2^{64172472750256} is an apocalyptic number.

It is an amenable number.

64172472750256 is an abundant number, since it is smaller than the sum of its proper divisors (69809182437488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64172472750256 is a wasteful number, since it uses less digits than its factorization.

64172472750256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191987629 (or 191987623 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 58.

The spelling of 64172472750256 in words is "sixty-four trillion, one hundred seventy-two billion, four hundred seventy-two million, seven hundred fifty thousand, two hundred fifty-six".