56840120569 has 2 divisors, whose sum is σ = 56840120570. Its totient is φ = 56840120568.

The previous prime is 56840120509. The next prime is 56840120573. The reversal of 56840120569 is 96502104865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28616120569 + 28224000000 = 169163^2 + 168000^2 .

It is a cyclic number.

It is not a de Polignac number, because 56840120569 - 2¹¹ = 56840118521 is a prime.

It is a super-2 number, since 2×56840120569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56840120509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28420060284 + 28420060285.

It is an arithmetic number, because the mean of its divisors is an integer number (28420060285).

Almost surely, 2^56840120569 is an apocalyptic number.

It is an amenable number.

56840120569 is a deficient number, since it is larger than the sum of its proper divisors (1).

56840120569 is an equidigital number, since it uses as much as digits as its factorization.

56840120569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 56840120569 in words is "fifty-six billion, eight hundred forty million, one hundred twenty thousand, five hundred sixty-nine".