56011425666 has 32 divisors (see below), whose sum is σ = 129345982080. Its totient is φ = 15838281216.

The previous prime is 56011425641. The next prime is 56011425689. The reversal of 56011425666 is 66652411065.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6870181 + ... + 6878328.

It is an arithmetic number, because the mean of its divisors is an integer number (4042061940).

Almost surely, 2^56011425666 is an apocalyptic number.

56011425666 is an abundant number, since it is smaller than the sum of its proper divisors (73334556414).

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

56011425666 is a wasteful number, since it uses less digits than its factorization.

56011425666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13748618.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 56011425666 in words is "fifty-six billion, eleven million, four hundred twenty-five thousand, six hundred sixty-six".