15115331520012 has 24 divisors (see below), whose sum is σ = 37343760226416. Its totient is φ = 4742064790528.

The previous prime is 15115331519993. The next prime is 15115331520017. The reversal of 15115331520012 is 21002513351151.

It is not an unprimeable number, because it can be changed into a prime (15115331520017) 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, 37047380973 + ... + 37047381380.

It is an arithmetic number, because the mean of its divisors is an integer number (1555990009434).

Almost surely, 2^{15115331520012} is an apocalyptic number.

15115331520012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15115331520012 is an abundant number, since it is smaller than the sum of its proper divisors (22228428706404).

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

15115331520012 is a wasteful number, since it uses less digits than its factorization.

15115331520012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74094762377 (or 74094762375 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 15115331520012 its reverse (21002513351151), we get a palindrome (36117844871163).

The spelling of 15115331520012 in words is "fifteen trillion, one hundred fifteen billion, three hundred thirty-one million, five hundred twenty thousand, twelve".