51661314088 has 16 divisors (see below), whose sum is σ = 96876057780. Its totient is φ = 25827698688.

The previous prime is 51661314083. The next prime is 51661314097. The reversal of 51661314088 is 88041316615.

It can be written as a sum of positive squares in 2 ways, for example, as 37629016324 + 14032297764 = 193982^2 + 118458^2 .

It is not an unprimeable number, because it can be changed into a prime (51661314083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294681 + ... + 436072.

Almost surely, 2^51661314088 is an apocalyptic number.

It is an amenable number.

51661314088 is a deficient number, since it is larger than the sum of its proper divisors (45214743692).

51661314088 is a wasteful number, since it uses less digits than its factorization.

51661314088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739596 (or 739592 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 51661314088 in words is "fifty-one billion, six hundred sixty-one million, three hundred fourteen thousand, eighty-eight".