256046746757 has 2 divisors, whose sum is σ = 256046746758. Its totient is φ = 256046746756.

The previous prime is 256046746721. The next prime is 256046746777. The reversal of 256046746757 is 757647640652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191913210241 + 64133536516 = 438079^2 + 253246^2 .

It is a cyclic number.

It is not a de Polignac number, because 256046746757 - 2⁶ = 256046746693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256046746696 and 256046746705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256046746777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128023373378 + 128023373379.

It is an arithmetic number, because the mean of its divisors is an integer number (128023373379).

Almost surely, 2^256046746757 is an apocalyptic number.

It is an amenable number.

256046746757 is a deficient number, since it is larger than the sum of its proper divisors (1).

256046746757 is an equidigital number, since it uses as much as digits as its factorization.

256046746757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59270400, while the sum is 59.

The spelling of 256046746757 in words is "two hundred fifty-six billion, forty-six million, seven hundred forty-six thousand, seven hundred fifty-seven".