56557641466 has 8 divisors (see below), whose sum is σ = 84905048340. Its totient is φ = 28255958688.

The previous prime is 56557641443. The next prime is 56557641521. The reversal of 56557641466 is 66414675565.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56308917025 + 248724441 = 237295^2 + 15771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11427931 + ... + 11432878.

Almost surely, 2^56557641466 is an apocalyptic number.

56557641466 is a deficient number, since it is larger than the sum of its proper divisors (28347406874).

56557641466 is a wasteful number, since it uses less digits than its factorization.

56557641466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22862048.

The product of its digits is 18144000, while the sum is 55.

The spelling of 56557641466 in words is "fifty-six billion, five hundred fifty-seven million, six hundred forty-one thousand, four hundred sixty-six".