56577385633 has 2 divisors, whose sum is σ = 56577385634. Its totient is φ = 56577385632.

The previous prime is 56577385609. The next prime is 56577385639. The reversal of 56577385633 is 33658377565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49683072609 + 6894313024 = 222897^2 + 83032^2 .

It is a cyclic number.

It is not a de Polignac number, because 56577385633 - 2⁹ = 56577385121 is a prime.

It is a super-3 number, since 3×56577385633³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (56577385639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28288692816 + 28288692817.

It is an arithmetic number, because the mean of its divisors is an integer number (28288692817).

Almost surely, 2^56577385633 is an apocalyptic number.

It is an amenable number.

56577385633 is a deficient number, since it is larger than the sum of its proper divisors (1).

56577385633 is an equidigital number, since it uses as much as digits as its factorization.

56577385633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628000, while the sum is 58.

The spelling of 56577385633 in words is "fifty-six billion, five hundred seventy-seven million, three hundred eighty-five thousand, six hundred thirty-three".