56664537023 has 2 divisors, whose sum is σ = 56664537024. Its totient is φ = 56664537022.

The previous prime is 56664536977. The next prime is 56664537043. The reversal of 56664537023 is 32073546665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56664537023 - 2¹² = 56664532927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56664537043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28332268511 + 28332268512.

It is an arithmetic number, because the mean of its divisors is an integer number (28332268512).

Almost surely, 2^56664537023 is an apocalyptic number.

56664537023 is a deficient number, since it is larger than the sum of its proper divisors (1).

56664537023 is an equidigital number, since it uses as much as digits as its factorization.

56664537023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 47.

The spelling of 56664537023 in words is "fifty-six billion, six hundred sixty-four million, five hundred thirty-seven thousand, twenty-three".