556437135666 has 32 divisors (see below), whose sum is σ = 1161495054720. Its totient is φ = 177378844544.

The previous prime is 556437135659. The next prime is 556437135719. The reversal of 556437135666 is 666531734655.

556437135666 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280870 + ... + 1091678.

It is an arithmetic number, because the mean of its divisors is an integer number (36296720460).

Almost surely, 2^556437135666 is an apocalyptic number.

556437135666 is an abundant number, since it is smaller than the sum of its proper divisors (605057919054).

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

556437135666 is a wasteful number, since it uses less digits than its factorization.

556437135666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815810.

The product of its digits is 40824000, while the sum is 57.

The spelling of 556437135666 in words is "five hundred fifty-six billion, four hundred thirty-seven million, one hundred thirty-five thousand, six hundred sixty-six".