15112742520 has 32 divisors (see below), whose sum is σ = 45338227920. Its totient is φ = 4030064640.

The previous prime is 15112742471. The next prime is 15112742521. The reversal of 15112742520 is 2524721151.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15112742521) 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, 62969641 + ... + 62969880.

Almost surely, 2^15112742520 is an apocalyptic number.

15112742520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15112742520 is an abundant number, since it is smaller than the sum of its proper divisors (30225485400).

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

15112742520 is a wasteful number, since it uses less digits than its factorization.

15112742520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125939535 (or 125939531 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The spelling of 15112742520 in words is "fifteen billion, one hundred twelve million, seven hundred forty-two thousand, five hundred twenty".