256834150680 has 32 divisors (see below), whose sum is σ = 770502452400. Its totient is φ = 68489106816.

The previous prime is 256834150673. The next prime is 256834150687. The reversal of 256834150680 is 86051438652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (256834150673) and next prime (256834150687).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256834150687) 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, 1070142175 + ... + 1070142414.

Almost surely, 2^256834150680 is an apocalyptic number.

256834150680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256834150680 is an abundant number, since it is smaller than the sum of its proper divisors (513668301720).

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

256834150680 is a wasteful number, since it uses less digits than its factorization.

256834150680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140284603 (or 2140284599 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 256834150680 in words is "two hundred fifty-six billion, eight hundred thirty-four million, one hundred fifty thousand, six hundred eighty".