51631414522166 has 4 divisors (see below), whose sum is σ = 77447121783252. Its totient is φ = 25815707261082.

The previous prime is 51631414522123. The next prime is 51631414522183. The reversal of 51631414522166 is 66122541413615.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51631414522166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12907853630540 + ... + 12907853630543.

It is an arithmetic number, because the mean of its divisors is an integer number (19361780445813).

Almost surely, 2^{51631414522166} is an apocalyptic number.

51631414522166 is a deficient number, since it is larger than the sum of its proper divisors (25815707261086).

51631414522166 is a wasteful number, since it uses less digits than its factorization.

51631414522166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25815707261085.

The product of its digits is 1036800, while the sum is 47.

The spelling of 51631414522166 in words is "fifty-one trillion, six hundred thirty-one billion, four hundred fourteen million, five hundred twenty-two thousand, one hundred sixty-six".