551161356666 has 16 divisors (see below), whose sum is σ = 1102510221888. Its totient is φ = 183689200800.

The previous prime is 551161356649. The next prime is 551161356701. The reversal of 551161356666 is 666653161155.

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, 7774630 + ... + 7845201.

It is an arithmetic number, because the mean of its divisors is an integer number (68906888868).

Almost surely, 2^551161356666 is an apocalyptic number.

551161356666 is an abundant number, since it is smaller than the sum of its proper divisors (551348865222).

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

551161356666 is a wasteful number, since it uses less digits than its factorization.

551161356666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15625717.

The product of its digits is 2916000, while the sum is 51.

The spelling of 551161356666 in words is "five hundred fifty-one billion, one hundred sixty-one million, three hundred fifty-six thousand, six hundred sixty-six".