56445723599 has 2 divisors, whose sum is σ = 56445723600. Its totient is φ = 56445723598.

The previous prime is 56445723463. The next prime is 56445723623. The reversal of 56445723599 is 99532754465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56445723599 - 2⁸ = 56445723343 is a prime.

It is a super-2 number, since 2×56445723599² (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 (56445623599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28222861799 + 28222861800.

It is an arithmetic number, because the mean of its divisors is an integer number (28222861800).

Almost surely, 2^56445723599 is an apocalyptic number.

56445723599 is a deficient number, since it is larger than the sum of its proper divisors (1).

56445723599 is an equidigital number, since it uses as much as digits as its factorization.

56445723599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824000, while the sum is 59.

The spelling of 56445723599 in words is "fifty-six billion, four hundred forty-five million, seven hundred twenty-three thousand, five hundred ninety-nine".