56365998769 has 2 divisors, whose sum is σ = 56365998770. Its totient is φ = 56365998768.

The previous prime is 56365998739. The next prime is 56365998791. The reversal of 56365998769 is 96789956365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41697640000 + 14668358769 = 204200^2 + 121113^2 .

It is a cyclic number.

It is not a de Polignac number, because 56365998769 - 2⁷ = 56365998641 is a prime.

It is a super-2 number, since 2×56365998769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56365998739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28182999384 + 28182999385.

It is an arithmetic number, because the mean of its divisors is an integer number (28182999385).

Almost surely, 2^56365998769 is an apocalyptic number.

It is an amenable number.

56365998769 is a deficient number, since it is larger than the sum of its proper divisors (1).

56365998769 is an equidigital number, since it uses as much as digits as its factorization.

56365998769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 661348800, while the sum is 73.

The spelling of 56365998769 in words is "fifty-six billion, three hundred sixty-five million, nine hundred ninety-eight thousand, seven hundred sixty-nine".