56235256643 has 2 divisors, whose sum is σ = 56235256644. Its totient is φ = 56235256642.

The previous prime is 56235256603. The next prime is 56235256661. The reversal of 56235256643 is 34665253265.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56235256643 - 2⁶ = 56235256579 is a prime.

It is not a weakly prime, because it can be changed into another prime (56235256603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28117628321 + 28117628322.

It is an arithmetic number, because the mean of its divisors is an integer number (28117628322).

Almost surely, 2^56235256643 is an apocalyptic number.

56235256643 is a deficient number, since it is larger than the sum of its proper divisors (1).

56235256643 is an equidigital number, since it uses as much as digits as its factorization.

56235256643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 47.

The spelling of 56235256643 in words is "fifty-six billion, two hundred thirty-five million, two hundred fifty-six thousand, six hundred forty-three".