256620735342711 has 36 divisors (see below), whose sum is σ = 382377095908392. Its totient is φ = 165723392716704.

The previous prime is 256620735342707. The next prime is 256620735342749. The reversal of 256620735342711 is 117243537026652.

256620735342711 is a `hidden beast` number, since 2 + 5 + 6 + 6 + 2 + 0 + 73 + 534 + 27 + 11 = 666.

It is not a de Polignac number, because 256620735342711 - 2² = 256620735342707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256620735342311) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9681496 + ... + 24636818.

Almost surely, 2^{256620735342711} is an apocalyptic number.

256620735342711 is a deficient number, since it is larger than the sum of its proper divisors (125756360565681).

256620735342711 is a wasteful number, since it uses less digits than its factorization.

256620735342711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14955820 (or 14955590 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 256620735342711 in words is "two hundred fifty-six trillion, six hundred twenty billion, seven hundred thirty-five million, three hundred forty-two thousand, seven hundred eleven".