13515342012 has 18 divisors (see below), whose sum is σ = 34163781288. Its totient is φ = 4505113992.

The previous prime is 13515341999. The next prime is 13515342073. The reversal of 13515342012 is 21024351531.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 187713048 + ... + 187713119.

Almost surely, 2^13515342012 is an apocalyptic number.

13515342012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13515342012 is an abundant number, since it is smaller than the sum of its proper divisors (20648439276).

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

13515342012 is a wasteful number, since it uses less digits than its factorization.

13515342012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375426177 (or 375426172 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 13515342012 its reverse (21024351531), we get a palindrome (34539693543).

The spelling of 13515342012 in words is "thirteen billion, five hundred fifteen million, three hundred forty-two thousand, twelve".