15002140512 has 96 divisors (see below), whose sum is σ = 40241093760. Its totient is φ = 4892267520.

The previous prime is 15002140427. The next prime is 15002140519. The reversal of 15002140512 is 21504120051.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15002140519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1188828 + ... + 1201380.

It is an arithmetic number, because the mean of its divisors is an integer number (419178060).

Almost surely, 2^15002140512 is an apocalyptic number.

15002140512 is a gapful number since it is divisible by the number (12) 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 15002140512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20120546880).

15002140512 is an abundant number, since it is smaller than the sum of its proper divisors (25238953248).

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

15002140512 is a wasteful number, since it uses less digits than its factorization.

15002140512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12836 (or 12828 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 15002140512 its reverse (21504120051), we get a palindrome (36506260563).

The spelling of 15002140512 in words is "fifteen billion, two million, one hundred forty thousand, five hundred twelve".