256051262460 has 48 divisors (see below), whose sum is σ = 819364041216. Its totient is φ = 58526002752.

The previous prime is 256051262443. The next prime is 256051262521. The reversal of 256051262460 is 64262150652.

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, 304822512 + ... + 304823351.

It is an arithmetic number, because the mean of its divisors is an integer number (17070084192).

Almost surely, 2^256051262460 is an apocalyptic number.

256051262460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256051262460 is an abundant number, since it is smaller than the sum of its proper divisors (563312778756).

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

256051262460 is a wasteful number, since it uses less digits than its factorization.

256051262460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609645882 (or 609645880 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 256051262460 in words is "two hundred fifty-six billion, fifty-one million, two hundred sixty-two thousand, four hundred sixty".