51634731136 has 32 divisors (see below), whose sum is σ = 102887184780. Its totient is φ = 25812065280.

The previous prime is 51634731119. The next prime is 51634731139. The reversal of 51634731136 is 63113743615.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51463644736 + 171086400 = 226856^2 + 13080^2 .

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

It is a super-2 number, since 2×51634731136² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51634731139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626406 + ... + 704026.

Almost surely, 2^51634731136 is an apocalyptic number.

It is an amenable number.

51634731136 is a deficient number, since it is larger than the sum of its proper divisors (51252453644).

51634731136 is an equidigital number, since it uses as much as digits as its factorization.

51634731136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82832 (or 82820 counting only the distinct ones).

The product of its digits is 136080, while the sum is 40.

The spelling of 51634731136 in words is "fifty-one billion, six hundred thirty-four million, seven hundred thirty-one thousand, one hundred thirty-six".