51550560100666 has 16 divisors (see below), whose sum is σ = 84624968262528. Its totient is φ = 23357209917600.

The previous prime is 51550560100597. The next prime is 51550560100681. The reversal of 51550560100666 is 66600106505515.

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, 3743135730 + ... + 3743149501.

It is an arithmetic number, because the mean of its divisors is an integer number (5289060516408).

Almost surely, 2^{51550560100666} is an apocalyptic number.

51550560100666 is a deficient number, since it is larger than the sum of its proper divisors (33074408161862).

51550560100666 is a wasteful number, since it uses less digits than its factorization.

51550560100666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7486285557.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 51550560100666 in words is "fifty-one trillion, five hundred fifty billion, five hundred sixty million, one hundred thousand, six hundred sixty-six".