56574638969 has 2 divisors, whose sum is σ = 56574638970. Its totient is φ = 56574638968.

The previous prime is 56574638959. The next prime is 56574638977. The reversal of 56574638969 is 96983647565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55973408569 + 601230400 = 236587^2 + 24520^2 .

It is a cyclic number.

It is not a de Polignac number, because 56574638969 - 2²⁴ = 56557861753 is a prime.

It is a super-2 number, since 2×56574638969² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56574638899 and 56574638908.

It is not a weakly prime, because it can be changed into another prime (56574638959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28287319484 + 28287319485.

It is an arithmetic number, because the mean of its divisors is an integer number (28287319485).

Almost surely, 2^56574638969 is an apocalyptic number.

It is an amenable number.

56574638969 is a deficient number, since it is larger than the sum of its proper divisors (1).

56574638969 is an equidigital number, since it uses as much as digits as its factorization.

56574638969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 293932800, while the sum is 68.

The spelling of 56574638969 in words is "fifty-six billion, five hundred seventy-four million, six hundred thirty-eight thousand, nine hundred sixty-nine".