51694559360 has 32 divisors (see below), whose sum is σ = 123582307500. Its totient is φ = 20677823488.

The previous prime is 51694559353. The next prime is 51694559387. The reversal of 51694559360 is 6395549615.

It can be written as a sum of positive squares in 2 ways, for example, as 51681656896 + 12902464 = 227336^2 + 3592^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

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, 40385735 + ... + 40387014.

Almost surely, 2^51694559360 is an apocalyptic number.

It is an amenable number.

51694559360 is an abundant number, since it is smaller than the sum of its proper divisors (71887748140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51694559360 is an equidigital number, since it uses as much as digits as its factorization.

51694559360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80772768 (or 80772756 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 53.

The spelling of 51694559360 in words is "fifty-one billion, six hundred ninety-four million, five hundred fifty-nine thousand, three hundred sixty".