15136813836 has 18 divisors (see below), whose sum is σ = 38262501732. Its totient is φ = 5045604600.

The previous prime is 15136813789. The next prime is 15136813837. The reversal of 15136813836 is 63831863151.

15136813836 is a `hidden beast` number, since 151 + 368 + 138 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 15136813791 and 15136813800.

It is not an unprimeable number, because it can be changed into a prime (15136813837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210233490 + ... + 210233561.

Almost surely, 2^15136813836 is an apocalyptic number.

It is an amenable number.

15136813836 is an abundant number, since it is smaller than the sum of its proper divisors (23125687896).

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

15136813836 is a wasteful number, since it uses less digits than its factorization.

15136813836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420467061 (or 420467056 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 15136813836 in words is "fifteen billion, one hundred thirty-six million, eight hundred thirteen thousand, eight hundred thirty-six".