656556342366 has 32 divisors (see below), whose sum is σ = 1345335487776. Its totient is φ = 213483200000.

The previous prime is 656556342353. The next prime is 656556342437. The reversal of 656556342366 is 663243655656.

It is a happy number.

It is a congruent number.

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, 1531636 + ... + 1912856.

It is an arithmetic number, because the mean of its divisors is an integer number (42041733993).

Almost surely, 2^656556342366 is an apocalyptic number.

656556342366 is an abundant number, since it is smaller than the sum of its proper divisors (688779145410).

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

656556342366 is a wasteful number, since it uses less digits than its factorization.

656556342366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388268.

The product of its digits is 69984000, while the sum is 57.

The spelling of 656556342366 in words is "six hundred fifty-six billion, five hundred fifty-six million, three hundred forty-two thousand, three hundred sixty-six".