56139645943 has 2 divisors, whose sum is σ = 56139645944. Its totient is φ = 56139645942.

The previous prime is 56139645929. The next prime is 56139645997. The reversal of 56139645943 is 34954693165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56139645943 - 2⁹ = 56139645431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56139645043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28069822971 + 28069822972.

It is an arithmetic number, because the mean of its divisors is an integer number (28069822972).

Almost surely, 2^56139645943 is an apocalyptic number.

56139645943 is a deficient number, since it is larger than the sum of its proper divisors (1).

56139645943 is an equidigital number, since it uses as much as digits as its factorization.

56139645943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10497600, while the sum is 55.

The spelling of 56139645943 in words is "fifty-six billion, one hundred thirty-nine million, six hundred forty-five thousand, nine hundred forty-three".