56615115611 has 2 divisors, whose sum is σ = 56615115612. Its totient is φ = 56615115610.

The previous prime is 56615115563. The next prime is 56615115619. The reversal of 56615115611 is 11651151665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56615115611 - 2⁶ = 56615115547 is a prime.

It is not a weakly prime, because it can be changed into another prime (56615115619) 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, 28307557805 + 28307557806.

It is an arithmetic number, because the mean of its divisors is an integer number (28307557806).

Almost surely, 2^56615115611 is an apocalyptic number.

56615115611 is a deficient number, since it is larger than the sum of its proper divisors (1).

56615115611 is an equidigital number, since it uses as much as digits as its factorization.

56615115611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 38.

The spelling of 56615115611 in words is "fifty-six billion, six hundred fifteen million, one hundred fifteen thousand, six hundred eleven".