56615056651 has 4 divisors (see below), whose sum is σ = 56617781400. Its totient is φ = 56612331904.

The previous prime is 56615056639. The next prime is 56615056661. The reversal of 56615056651 is 15665051665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56615056651 - 2²³ = 56606668043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56615056661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330966 + ... + 1372843.

It is an arithmetic number, because the mean of its divisors is an integer number (14154445350).

Almost surely, 2^56615056651 is an apocalyptic number.

56615056651 is a deficient number, since it is larger than the sum of its proper divisors (2724749).

56615056651 is a wasteful number, since it uses less digits than its factorization.

56615056651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724748.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 56615056651 in words is "fifty-six billion, six hundred fifteen million, fifty-six thousand, six hundred fifty-one".