256542708967 has 8 divisors (see below), whose sum is σ = 264849063552. Its totient is φ = 248238278400.

The previous prime is 256542708959. The next prime is 256542708997. The reversal of 256542708967 is 769807245652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256542708967 - 2³ = 256542708959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256542708997) 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, 207538 + ... + 745759.

It is an arithmetic number, because the mean of its divisors is an integer number (33106132944).

Almost surely, 2^256542708967 is an apocalyptic number.

256542708967 is a deficient number, since it is larger than the sum of its proper divisors (8306354585).

256542708967 is an equidigital number, since it uses as much as digits as its factorization.

256542708967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962009.

The product of its (nonzero) digits is 50803200, while the sum is 61.

The spelling of 256542708967 in words is "two hundred fifty-six billion, five hundred forty-two million, seven hundred eight thousand, nine hundred sixty-seven".