13515004212 has 192 divisors, whose sum is σ = 34371993600. Its totient is φ = 4125219840.

The previous prime is 13515004193. The next prime is 13515004213. The reversal of 13515004212 is 21240051531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13515004213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 106417293 + ... + 106417419.

It is an arithmetic number, because the mean of its divisors is an integer number (179020800).

Almost surely, 2^13515004212 is an apocalyptic number.

13515004212 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 13515004212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17185996800).

13515004212 is an abundant number, since it is smaller than the sum of its proper divisors (20856989388).

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

13515004212 is a wasteful number, since it uses less digits than its factorization.

13515004212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 13515004212 its reverse (21240051531), we get a palindrome (34755055743).

The spelling of 13515004212 in words is "thirteen billion, five hundred fifteen million, four thousand, two hundred twelve".