56161568279 has 2 divisors, whose sum is σ = 56161568280. Its totient is φ = 56161568278.

The previous prime is 56161568249. The next prime is 56161568293. The reversal of 56161568279 is 97286516165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56161568279 - 2¹² = 56161564183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56161568249) 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, 28080784139 + 28080784140.

It is an arithmetic number, because the mean of its divisors is an integer number (28080784140).

Almost surely, 2^56161568279 is an apocalyptic number.

56161568279 is a deficient number, since it is larger than the sum of its proper divisors (1).

56161568279 is an equidigital number, since it uses as much as digits as its factorization.

56161568279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 56.

The spelling of 56161568279 in words is "fifty-six billion, one hundred sixty-one million, five hundred sixty-eight thousand, two hundred seventy-nine".