256736527260751 has 2 divisors, whose sum is σ = 256736527260752. Its totient is φ = 256736527260750.

The previous prime is 256736527260721. The next prime is 256736527260757. The reversal of 256736527260751 is 157062725637652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256736527260751 - 2⁷ = 256736527260623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256736527260757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128368263630375 + 128368263630376.

It is an arithmetic number, because the mean of its divisors is an integer number (128368263630376).

Almost surely, 2^{256736527260751} is an apocalyptic number.

256736527260751 is a deficient number, since it is larger than the sum of its proper divisors (1).

256736527260751 is an equidigital number, since it uses as much as digits as its factorization.

256736527260751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264000, while the sum is 64.

The spelling of 256736527260751 in words is "two hundred fifty-six trillion, seven hundred thirty-six billion, five hundred twenty-seven million, two hundred sixty thousand, seven hundred fifty-one".