56660453360442 has 40 divisors (see below), whose sum is σ = 127032354678900. Its totient is φ = 18876260497536.

The previous prime is 56660453360437. The next prime is 56660453360449. The reversal of 56660453360442 is 24406335406665.

It can be written as a sum of positive squares in 2 ways, for example, as 56595814874361 + 64638486081 = 7523019^2 + 254241^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (56660453360449) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 97461967 + ... + 98041602.

Almost surely, 2^{56660453360442} is an apocalyptic number.

56660453360442 is an abundant number, since it is smaller than the sum of its proper divisors (70371901318458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56660453360442 is a wasteful number, since it uses less digits than its factorization.

56660453360442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195505372 (or 195505363 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 54.

The spelling of 56660453360442 in words is "fifty-six trillion, six hundred sixty billion, four hundred fifty-three million, three hundred sixty thousand, four hundred forty-two".