100051556505666 has 32 divisors (see below), whose sum is σ = 200127281126400. Its totient is φ = 33346491132240.

The previous prime is 100051556505647. The next prime is 100051556505689. The reversal of 100051556505666 is 666505655150001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2792300371 + ... + 2792336201.

It is an arithmetic number, because the mean of its divisors is an integer number (6253977535200).

Almost surely, 2^{100051556505666} is an apocalyptic number.

100051556505666 is an abundant number, since it is smaller than the sum of its proper divisors (100075724620734).

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

100051556505666 is a wasteful number, since it uses less digits than its factorization.

100051556505666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79054.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 100051556505666 in words is "one hundred trillion, fifty-one billion, five hundred fifty-six million, five hundred five thousand, six hundred sixty-six".