51031664102 has 16 divisors (see below), whose sum is σ = 80581541040. Its totient is φ = 24171324768.

The previous prime is 51031664087. The next prime is 51031664113. The reversal of 51031664102 is 20146613015.

It is a happy number.

It is a congruent number.

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, 726308 + ... + 793464.

It is an arithmetic number, because the mean of its divisors is an integer number (5036346315).

Almost surely, 2^51031664102 is an apocalyptic number.

51031664102 is a deficient number, since it is larger than the sum of its proper divisors (29549876938).

51031664102 is a wasteful number, since it uses less digits than its factorization.

51031664102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87175.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 51031664102 in words is "fifty-one billion, thirty-one million, six hundred sixty-four thousand, one hundred two".