256477622706567 has 24 divisors (see below), whose sum is σ = 376174992078704. Its totient is φ = 168353352059904.

The previous prime is 256477622706553. The next prime is 256477622706587. The reversal of 256477622706567 is 765607226774652.

256477622706567 is a `hidden beast` number, since 2 + 5 + 6 + 477 + 6 + 22 + 70 + 6 + 5 + 67 = 666.

It is not a de Polignac number, because 256477622706567 - 2⁴ = 256477622706551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256477622706495 and 256477622706504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256477622706587) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99373288 + ... + 101921565.

Almost surely, 2^{256477622706567} is an apocalyptic number.

256477622706567 is a deficient number, since it is larger than the sum of its proper divisors (119697369372137).

256477622706567 is a wasteful number, since it uses less digits than its factorization.

256477622706567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201297039 (or 201297036 counting only the distinct ones).

The product of its (nonzero) digits is 2489356800, while the sum is 72.

The spelling of 256477622706567 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, six hundred twenty-two million, seven hundred six thousand, five hundred sixty-seven".