15232544540 has 24 divisors (see below), whose sum is σ = 31994959920. Its totient is φ = 6091757568.

The previous prime is 15232544531. The next prime is 15232544647. The reversal of 15232544540 is 4544523251.

It is a self number, because there is not a number n which added to its sum of digits gives 15232544540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23591 + ... + 176129.

It is an arithmetic number, because the mean of its divisors is an integer number (1333123330).

Almost surely, 2^15232544540 is an apocalyptic number.

15232544540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15232544540 is an abundant number, since it is smaller than the sum of its proper divisors (16762415380).

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

15232544540 is a wasteful number, since it uses less digits than its factorization.

15232544540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157541 (or 157539 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 15232544540 in words is "fifteen billion, two hundred thirty-two million, five hundred forty-four thousand, five hundred forty".