56236968401 has 2 divisors, whose sum is σ = 56236968402. Its totient is φ = 56236968400.

The previous prime is 56236968373. The next prime is 56236968443. The reversal of 56236968401 is 10486963265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40555918225 + 15681050176 = 201385^2 + 125224^2 .

It is a cyclic number.

It is not a de Polignac number, because 56236968401 - 2¹⁸ = 56236706257 is a prime.

It is a super-2 number, since 2×56236968401² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56236968401.

It is not a weakly prime, because it can be changed into another prime (56236968451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28118484200 + 28118484201.

It is an arithmetic number, because the mean of its divisors is an integer number (28118484201).

Almost surely, 2^56236968401 is an apocalyptic number.

It is an amenable number.

56236968401 is a deficient number, since it is larger than the sum of its proper divisors (1).

56236968401 is an equidigital number, since it uses as much as digits as its factorization.

56236968401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 56236968401 in words is "fifty-six billion, two hundred thirty-six million, nine hundred sixty-eight thousand, four hundred one".