256669024528 has 20 divisors (see below), whose sum is σ = 568338554560. Its totient is φ = 110001010464.

The previous prime is 256669024517. The next prime is 256669024583. The reversal of 256669024528 is 825420966652.

It is a happy 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, 1145843748 + ... + 1145843971.

It is an arithmetic number, because the mean of its divisors is an integer number (28416927728).

Almost surely, 2^256669024528 is an apocalyptic number.

256669024528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

256669024528 is an abundant number, since it is smaller than the sum of its proper divisors (311669530032).

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

256669024528 is a wasteful number, since it uses less digits than its factorization.

256669024528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291687734 (or 2291687728 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 256669024528 in words is "two hundred fifty-six billion, six hundred sixty-nine million, twenty-four thousand, five hundred twenty-eight".