15115300000 has 72 divisors (see below), whose sum is σ = 37195674012. Its totient is φ = 6046080000.

The previous prime is 15115299971. The next prime is 15115300003. The reversal of 15115300000 is 351151.

It can be written as a sum of positive squares in 6 ways, for example, as 976187536 + 14139112464 = 31244^2 + 118908^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (15115300003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24424 + ... + 175576.

Almost surely, 2^15115300000 is an apocalyptic number.

15115300000 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 15115300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18597837006).

15115300000 is an abundant number, since it is smaller than the sum of its proper divisors (22080374012).

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

15115300000 is an frugal number, since it uses more digits than its factorization.

15115300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151188 (or 151160 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 16.

Adding to 15115300000 its reverse (351151), we get a palindrome (15115651151).

The spelling of 15115300000 in words is "fifteen billion, one hundred fifteen million, three hundred thousand".