15135215030012 has 144 divisors (see below), whose sum is σ = 35323210758528. Its totient is φ = 5604032407680.

The previous prime is 15135215030009. The next prime is 15135215030053. The reversal of 15135215030012 is 21003051253151.

It is a super-2 number, since 2×15135215030012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1224023 + ... + 5636369.

It is an arithmetic number, because the mean of its divisors is an integer number (245300074712).

Almost surely, 2^{15135215030012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15135215030012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17661605379264).

15135215030012 is an abundant number, since it is smaller than the sum of its proper divisors (20187995728516).

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

15135215030012 is a wasteful number, since it uses less digits than its factorization.

15135215030012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412456 (or 4412447 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 15135215030012 its reverse (21003051253151), we get a palindrome (36138266283163).

The spelling of 15135215030012 in words is "fifteen trillion, one hundred thirty-five billion, two hundred fifteen million, thirty thousand, twelve".