556656506066 has 16 divisors (see below), whose sum is σ = 863976879360. Its totient is φ = 268707069840.

The previous prime is 556656506053. The next prime is 556656506117. The reversal of 556656506066 is 660605656655.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10688021 + ... + 10739976.

It is an arithmetic number, because the mean of its divisors is an integer number (53998554960).

Almost surely, 2^556656506066 is an apocalyptic number.

556656506066 is a deficient number, since it is larger than the sum of its proper divisors (307320373294).

556656506066 is a wasteful number, since it uses less digits than its factorization.

556656506066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21428449.

The product of its (nonzero) digits is 29160000, while the sum is 56.

The spelling of 556656506066 in words is "five hundred fifty-six billion, six hundred fifty-six million, five hundred six thousand, sixty-six".