15513240000 has 140 divisors (see below), whose sum is σ = 51290787944. Its totient is φ = 4136832000.

The previous prime is 15513239981. The next prime is 15513240037. The reversal of 15513240000 is 4231551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55362 + ... + 184638.

Almost surely, 2^15513240000 is an apocalyptic number.

15513240000 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 15513240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25645393972).

15513240000 is an abundant number, since it is smaller than the sum of its proper divisors (35777547944).

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

15513240000 is an equidigital number, since it uses as much as digits as its factorization.

15513240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129312 (or 129287 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 15513240000 its reverse (4231551), we get a palindrome (15517471551).

The spelling of 15513240000 in words is "fifteen billion, five hundred thirteen million, two hundred forty thousand".