256926118877 has 2 divisors, whose sum is σ = 256926118878. Its totient is φ = 256926118876.

The previous prime is 256926118847. The next prime is 256926118907. The reversal of 256926118877 is 778811629652.

It is a balanced prime because it is at equal distance from previous prime (256926118847) and next prime (256926118907).

It can be written as a sum of positive squares in only one way, i.e., 252299262436 + 4626856441 = 502294^2 + 68021^2 .

It is a cyclic number.

It is not a de Polignac number, because 256926118877 - 2²⁶ = 256859010013 is a prime.

It is a super-2 number, since 2×256926118877² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256926118847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128463059438 + 128463059439.

It is an arithmetic number, because the mean of its divisors is an integer number (128463059439).

Almost surely, 2^256926118877 is an apocalyptic number.

It is an amenable number.

256926118877 is a deficient number, since it is larger than the sum of its proper divisors (1).

256926118877 is an equidigital number, since it uses as much as digits as its factorization.

256926118877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 62.

The spelling of 256926118877 in words is "two hundred fifty-six billion, nine hundred twenty-six million, one hundred eighteen thousand, eight hundred seventy-seven".