256433257588 has 24 divisors (see below), whose sum is σ = 451081924832. Its totient is φ = 127554308064.

The previous prime is 256433257583. The next prime is 256433257589. The reversal of 256433257588 is 885752334652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256433257583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442606 + ... + 841882.

Almost surely, 2^256433257588 is an apocalyptic number.

It is an amenable number.

256433257588 is a deficient number, since it is larger than the sum of its proper divisors (194648667244).

256433257588 is a wasteful number, since it uses less digits than its factorization.

256433257588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400111 (or 400109 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 58.

The spelling of 256433257588 in words is "two hundred fifty-six billion, four hundred thirty-three million, two hundred fifty-seven thousand, five hundred eighty-eight".