5115561636 has 24 divisors (see below), whose sum is σ = 12227441184. Its totient is φ = 1663597120.

The previous prime is 5115561623. The next prime is 5115561637. The reversal of 5115561636 is 6361655115.

It is a junction number, because it is equal to n+sod(n) for n = 5115561594 and 5115561603.

It is not an unprimeable number, because it can be changed into a prime (5115561637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5198250 + ... + 5199233.

It is an arithmetic number, because the mean of its divisors is an integer number (509476716).

Almost surely, 2^5115561636 is an apocalyptic number.

It is an amenable number.

5115561636 is an abundant number, since it is smaller than the sum of its proper divisors (7111879548).

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

5115561636 is a wasteful number, since it uses less digits than its factorization.

5115561636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10397531 (or 10397529 counting only the distinct ones).

The product of its digits is 81000, while the sum is 39.

The square root of 5115561636 is about 71523.1545445249. The cubic root of 5115561636 is about 1723.0495786013.

The spelling of 5115561636 in words is "five billion, one hundred fifteen million, five hundred sixty-one thousand, six hundred thirty-six".