256672467699 has 16 divisors (see below), whose sum is σ = 343833971712. Its totient is φ = 170313281568.

The previous prime is 256672467691. The next prime is 256672467719. The reversal of 256672467699 is 996764276652.

It is not a de Polignac number, because 256672467699 - 2³ = 256672467691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256672467691) 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 15 ways as a sum of consecutive naturals, for example, 3525049 + ... + 3597125.

It is an arithmetic number, because the mean of its divisors is an integer number (21489623232).

Almost surely, 2^256672467699 is an apocalyptic number.

256672467699 is a deficient number, since it is larger than the sum of its proper divisors (87161504013).

256672467699 is a wasteful number, since it uses less digits than its factorization.

256672467699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77626.

The product of its digits is 411505920, while the sum is 69.

The spelling of 256672467699 in words is "two hundred fifty-six billion, six hundred seventy-two million, four hundred sixty-seven thousand, six hundred ninety-nine".