15135645132 has 18 divisors (see below), whose sum is σ = 38259547508. Its totient is φ = 5045215032.

The previous prime is 15135645097. The next prime is 15135645137. The reversal of 15135645132 is 23154653151.

15135645132 is a `hidden beast` number, since 1 + 5 + 1 + 3 + 5 + 645 + 1 + 3 + 2 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 420434587 = 15135645132 / (1 + 5 + 1 + 3 + 5 + 6 + 4 + 5 + 1 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (15135645137) 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, 210217258 + ... + 210217329.

Almost surely, 2^15135645132 is an apocalyptic number.

15135645132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15135645132 is an abundant number, since it is smaller than the sum of its proper divisors (23123902376).

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

15135645132 is a wasteful number, since it uses less digits than its factorization.

15135645132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420434597 (or 420434592 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The spelling of 15135645132 in words is "fifteen billion, one hundred thirty-five million, six hundred forty-five thousand, one hundred thirty-two".