56953968716761 has 2 divisors, whose sum is σ = 56953968716762. Its totient is φ = 56953968716760.

The previous prime is 56953968716731. The next prime is 56953968716917. The reversal of 56953968716761 is 16761786935965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47899285906761 + 9054682810000 = 6920931^2 + 3009100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56953968716761 is a prime.

It is a super-2 number, since 2×56953968716761² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56953968716731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28476984358380 + 28476984358381.

It is an arithmetic number, because the mean of its divisors is an integer number (28476984358381).

Almost surely, 2^{56953968716761} is an apocalyptic number.

It is an amenable number.

56953968716761 is a deficient number, since it is larger than the sum of its proper divisors (1).

56953968716761 is an equidigital number, since it uses as much as digits as its factorization.

56953968716761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3086294400, while the sum is 79.

The spelling of 56953968716761 in words is "fifty-six trillion, nine hundred fifty-three billion, nine hundred sixty-eight million, seven hundred sixteen thousand, seven hundred sixty-one".