50515615636 has 12 divisors (see below), whose sum is σ = 88414072180. Its totient is φ = 25254452160.

The previous prime is 50515615607. The next prime is 50515615639. The reversal of 50515615636 is 63651651505.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32618527236 + 17897088400 = 180606^2 + 133780^2 .

It is a junction number, because it is equal to n+sod(n) for n = 50515615592 and 50515615601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50515615639) 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, 804891 + ... + 865378.

Almost surely, 2^50515615636 is an apocalyptic number.

It is an amenable number.

50515615636 is a deficient number, since it is larger than the sum of its proper divisors (37898456544).

50515615636 is a wasteful number, since it uses less digits than its factorization.

50515615636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677834 (or 1677832 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 43.

The spelling of 50515615636 in words is "fifty billion, five hundred fifteen million, six hundred fifteen thousand, six hundred thirty-six".