56660055129 has 12 divisors (see below), whose sum is σ = 81906108336. Its totient is φ = 37743920952.

The previous prime is 56660055113. The next prime is 56660055131. The reversal of 56660055129 is 92155006665.

56660055129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56660055129 - 2⁴ = 56660055113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56660053129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2441907 + ... + 2465000.

It is an arithmetic number, because the mean of its divisors is an integer number (6825509028).

Almost surely, 2^56660055129 is an apocalyptic number.

It is an amenable number.

56660055129 is a deficient number, since it is larger than the sum of its proper divisors (25246053207).

56660055129 is a wasteful number, since it uses less digits than its factorization.

56660055129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908196 (or 4908193 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 56660055129 in words is "fifty-six billion, six hundred sixty million, fifty-five thousand, one hundred twenty-nine".