56616115651 has 4 divisors (see below), whose sum is σ = 56616602400. Its totient is φ = 56615628904.

The previous prime is 56616115649. The next prime is 56616115663. The reversal of 56616115651 is 15651161665.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 15651161665 = 5 ⋅3130232333.

It is a cyclic number.

It is not a de Polignac number, because 56616115651 - 2¹ = 56616115649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56616115598 and 56616115607.

It is not an unprimeable number, because it can be changed into a prime (56616115691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44985 + ... + 339493.

It is an arithmetic number, because the mean of its divisors is an integer number (14154150600).

Almost surely, 2^56616115651 is an apocalyptic number.

56616115651 is a deficient number, since it is larger than the sum of its proper divisors (486749).

56616115651 is a wasteful number, since it uses less digits than its factorization.

56616115651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486748.

The product of its digits is 162000, while the sum is 43.

The spelling of 56616115651 in words is "fifty-six billion, six hundred sixteen million, one hundred fifteen thousand, six hundred fifty-one".