51166565108 has 12 divisors (see below), whose sum is σ = 89650293600. Its totient is φ = 25552195512.

The previous prime is 51166565057. The next prime is 51166565111. The reversal of 51166565108 is 80156566115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7768058 + ... + 7774641.

It is an arithmetic number, because the mean of its divisors is an integer number (7470857800).

Almost surely, 2^51166565108 is an apocalyptic number.

It is an amenable number.

51166565108 is a deficient number, since it is larger than the sum of its proper divisors (38483728492).

51166565108 is a wasteful number, since it uses less digits than its factorization.

51166565108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15543526 (or 15543524 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 44.

The spelling of 51166565108 in words is "fifty-one billion, one hundred sixty-six million, five hundred sixty-five thousand, one hundred eight".