256488234556 has 24 divisors (see below), whose sum is σ = 477206995104. Its totient is φ = 120353787840.

The previous prime is 256488234551. The next prime is 256488234557. The reversal of 256488234556 is 655432884652.

It is a self number, because there is not a number n which added to its sum of digits gives 256488234556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256488234551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26296215 + ... + 26305966.

It is an arithmetic number, because the mean of its divisors is an integer number (19883624796).

Almost surely, 2^256488234556 is an apocalyptic number.

It is an amenable number.

256488234556 is a deficient number, since it is larger than the sum of its proper divisors (220718760548).

256488234556 is a wasteful number, since it uses less digits than its factorization.

256488234556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52602261 (or 52602259 counting only the distinct ones).

The product of its digits is 55296000, while the sum is 58.

The spelling of 256488234556 in words is "two hundred fifty-six billion, four hundred eighty-eight million, two hundred thirty-four thousand, five hundred fifty-six".