256270667136 has 256 divisors, whose sum is σ = 758182809600. Its totient is φ = 76043520000.

The previous prime is 256270667101. The next prime is 256270667173. The reversal of 256270667136 is 631766072652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45282675 + ... + 45288333.

It is an arithmetic number, because the mean of its divisors is an integer number (2961651600).

Almost surely, 2^256270667136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256270667136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379091404800).

256270667136 is an abundant number, since it is smaller than the sum of its proper divisors (501912142464).

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

256270667136 is a wasteful number, since it uses less digits than its factorization.

256270667136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5909 (or 5897 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 256270667136 in words is "two hundred fifty-six billion, two hundred seventy million, six hundred sixty-seven thousand, one hundred thirty-six".