15132440520 has 256 divisors, whose sum is σ = 54089856000. Its totient is φ = 3749511168.

The previous prime is 15132440513. The next prime is 15132440549. The reversal of 15132440520 is 2504423151.

15132440520 is a `hidden beast` number, since 1 + 5 + 132 + 4 + 4 + 0 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1445224 + ... + 1455656.

It is an arithmetic number, because the mean of its divisors is an integer number (211288500).

Almost surely, 2^15132440520 is an apocalyptic number.

15132440520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15132440520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27044928000).

15132440520 is an abundant number, since it is smaller than the sum of its proper divisors (38957415480).

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

15132440520 is a wasteful number, since it uses less digits than its factorization.

15132440520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10549 (or 10539 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 15132440520 its reverse (2504423151), we get a palindrome (17636863671).

It can be divided in two parts, 151324 and 40520, that added together give a square (191844 = 438²).

The spelling of 15132440520 in words is "fifteen billion, one hundred thirty-two million, four hundred forty thousand, five hundred twenty".