56446132861 has 2 divisors, whose sum is σ = 56446132862. Its totient is φ = 56446132860.

The previous prime is 56446132849. The next prime is 56446132877. The reversal of 56446132861 is 16823164465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32186512836 + 24259620025 = 179406^2 + 155755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56446132861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56446132961) 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, 28223066430 + 28223066431.

It is an arithmetic number, because the mean of its divisors is an integer number (28223066431).

Almost surely, 2^56446132861 is an apocalyptic number.

It is an amenable number.

56446132861 is a deficient number, since it is larger than the sum of its proper divisors (1).

56446132861 is an equidigital number, since it uses as much as digits as its factorization.

56446132861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 46.

The spelling of 56446132861 in words is "fifty-six billion, four hundred forty-six million, one hundred thirty-two thousand, eight hundred sixty-one".