256500472243772 has 48 divisors (see below), whose sum is σ = 451522636830720. Its totient is φ = 127496323836672.

The previous prime is 256500472243699. The next prime is 256500472243819. The reversal of 256500472243772 is 277342274005652.

It is a super-2 number, since 2×256500472243772² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4076127773 + ... + 4076190699.

It is an arithmetic number, because the mean of its divisors is an integer number (9406721600640).

Almost surely, 2^{256500472243772} is an apocalyptic number.

It is an amenable number.

256500472243772 is a deficient number, since it is larger than the sum of its proper divisors (195022164586948).

256500472243772 is a wasteful number, since it uses less digits than its factorization.

256500472243772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72050 (or 72048 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 56.

The spelling of 256500472243772 in words is "two hundred fifty-six trillion, five hundred billion, four hundred seventy-two million, two hundred forty-three thousand, seven hundred seventy-two".