256976622488 has 16 divisors (see below), whose sum is σ = 481890649680. Its totient is φ = 128472449248.

The previous prime is 256976622457. The next prime is 256976622491. The reversal of 256976622488 is 884226679652.

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, 1913756 + ... + 2043627.

It is an arithmetic number, because the mean of its divisors is an integer number (30118165605).

Almost surely, 2^256976622488 is an apocalyptic number.

It is an amenable number.

256976622488 is a deficient number, since it is larger than the sum of its proper divisors (224914027192).

256976622488 is a wasteful number, since it uses less digits than its factorization.

256976622488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965506 (or 3965502 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 65.

The spelling of 256976622488 in words is "two hundred fifty-six billion, nine hundred seventy-six million, six hundred twenty-two thousand, four hundred eighty-eight".