51359733715986 has 12 divisors (see below), whose sum is σ = 111279423051342. Its totient is φ = 17119911238656.

The previous prime is 51359733715943. The next prime is 51359733715999. The reversal of 51359733715986 is 68951733795315.

It is a happy number.

51359733715986 is a `hidden beast` number, since 5 + 13 + 59 + 7 + 337 + 159 + 86 = 666.

51359733715986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42125616680625 + 9234117035361 = 6490425^2 + 3038769^2 .

It is a super-2 number, since 2×51359733715986² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1426659269871 + ... + 1426659269906.

Almost surely, 2^{51359733715986} is an apocalyptic number.

51359733715986 is an abundant number, since it is smaller than the sum of its proper divisors (59919689335356).

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

51359733715986 is a wasteful number, since it uses less digits than its factorization.

51359733715986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853318539785 (or 2853318539782 counting only the distinct ones).

The product of its digits is 642978000, while the sum is 72.

The spelling of 51359733715986 in words is "fifty-one trillion, three hundred fifty-nine billion, seven hundred thirty-three million, seven hundred fifteen thousand, nine hundred eighty-six".