256155526160 has 80 divisors (see below), whose sum is σ = 615790086912. Its totient is φ = 99028761600.

The previous prime is 256155526141. The next prime is 256155526273. The reversal of 256155526160 is 61625551652.

It is a tau number, because it is divible by the number of its divisors (80).

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, 13976 + ... + 715895.

Almost surely, 2^256155526160 is an apocalyptic number.

256155526160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256155526160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307895043456).

256155526160 is an abundant number, since it is smaller than the sum of its proper divisors (359634560752).

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

256155526160 is a wasteful number, since it uses less digits than its factorization.

256155526160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730032 (or 730026 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 256155526160 in words is "two hundred fifty-six billion, one hundred fifty-five million, five hundred twenty-six thousand, one hundred sixty".