56616665051 has 2 divisors, whose sum is σ = 56616665052. Its totient is φ = 56616665050.

The previous prime is 56616665011. The next prime is 56616665081. The reversal of 56616665051 is 15056661665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56616665051 - 2¹⁴ = 56616648667 is a prime.

It is a super-2 number, since 2×56616665051² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 56616664987 and 56616665005.

It is not a weakly prime, because it can be changed into another prime (56616665011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28308332525 + 28308332526.

It is an arithmetic number, because the mean of its divisors is an integer number (28308332526).

Almost surely, 2^56616665051 is an apocalyptic number.

56616665051 is a deficient number, since it is larger than the sum of its proper divisors (1).

56616665051 is an equidigital number, since it uses as much as digits as its factorization.

56616665051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 56616665051 in words is "fifty-six billion, six hundred sixteen million, six hundred sixty-five thousand, fifty-one".