256670630063 has 2 divisors, whose sum is σ = 256670630064. Its totient is φ = 256670630062.

The previous prime is 256670630057. The next prime is 256670630093. The reversal of 256670630063 is 360036076652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256670630063 - 2²⁶ = 256603521199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256670629996 and 256670630023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256670630023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128335315031 + 128335315032.

It is an arithmetic number, because the mean of its divisors is an integer number (128335315032).

Almost surely, 2^256670630063 is an apocalyptic number.

256670630063 is a deficient number, since it is larger than the sum of its proper divisors (1).

256670630063 is an equidigital number, since it uses as much as digits as its factorization.

256670630063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 44.

The spelling of 256670630063 in words is "two hundred fifty-six billion, six hundred seventy million, six hundred thirty thousand, sixty-three".