256416889631498 has 32 divisors (see below), whose sum is σ = 403412762492928. Its totient is φ = 122083064334000.

The previous prime is 256416889631473. The next prime is 256416889631531. The reversal of 256416889631498 is 894136988614652.

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, 31111178 + ... + 38480373.

It is an arithmetic number, because the mean of its divisors is an integer number (12606648827904).

Almost surely, 2^{256416889631498} is an apocalyptic number.

256416889631498 is a deficient number, since it is larger than the sum of its proper divisors (146995872861430).

256416889631498 is a wasteful number, since it uses less digits than its factorization.

256416889631498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69592538.

The product of its digits is 4299816960, while the sum is 80.

The spelling of 256416889631498 in words is "two hundred fifty-six trillion, four hundred sixteen billion, eight hundred eighty-nine million, six hundred thirty-one thousand, four hundred ninety-eight".