256149512152 has 16 divisors (see below), whose sum is σ = 486359834400. Its totient is φ = 126453556320.

The previous prime is 256149512147. The next prime is 256149512167. The reversal of 256149512152 is 251215941652.

It is a super-2 number, since 2×256149512152² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256149512099 and 256149512108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202649299 + ... + 202650562.

It is an arithmetic number, because the mean of its divisors is an integer number (30397489650).

Almost surely, 2^256149512152 is an apocalyptic number.

It is an amenable number.

256149512152 is a deficient number, since it is larger than the sum of its proper divisors (230210322248).

256149512152 is a wasteful number, since it uses less digits than its factorization.

256149512152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405299946 (or 405299942 counting only the distinct ones).

The product of its digits is 216000, while the sum is 43.

The spelling of 256149512152 in words is "two hundred fifty-six billion, one hundred forty-nine million, five hundred twelve thousand, one hundred fifty-two".