56657307269 has 2 divisors, whose sum is σ = 56657307270. Its totient is φ = 56657307268.

The previous prime is 56657307251. The next prime is 56657307293. The reversal of 56657307269 is 96270375665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50732156644 + 5925150625 = 225238^2 + 76975^2 .

It is a cyclic number.

It is not a de Polignac number, because 56657307269 - 2²⁴ = 56640530053 is a prime.

It is a super-2 number, since 2×56657307269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56657307169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28328653634 + 28328653635.

It is an arithmetic number, because the mean of its divisors is an integer number (28328653635).

Almost surely, 2^56657307269 is an apocalyptic number.

It is an amenable number.

56657307269 is a deficient number, since it is larger than the sum of its proper divisors (1).

56657307269 is an equidigital number, since it uses as much as digits as its factorization.

56657307269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14288400, while the sum is 56.

The spelling of 56657307269 in words is "fifty-six billion, six hundred fifty-seven million, three hundred seven thousand, two hundred sixty-nine".