256484638524 has 48 divisors (see below), whose sum is σ = 603152516736. Its totient is φ = 84825374400.

The previous prime is 256484638513. The next prime is 256484638547. The reversal of 256484638524 is 425836484652.

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, 9766299 + ... + 9792525.

It is an arithmetic number, because the mean of its divisors is an integer number (12565677432).

Almost surely, 2^256484638524 is an apocalyptic number.

It is an amenable number.

256484638524 is an abundant number, since it is smaller than the sum of its proper divisors (346667878212).

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

256484638524 is a wasteful number, since it uses less digits than its factorization.

256484638524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32586 (or 32584 counting only the distinct ones).

The product of its digits is 44236800, while the sum is 57.

The spelling of 256484638524 in words is "two hundred fifty-six billion, four hundred eighty-four million, six hundred thirty-eight thousand, five hundred twenty-four".