15115420204212 has 24 divisors (see below), whose sum is σ = 36019724743296. Its totient is φ = 4931271839488.

The previous prime is 15115420204187. The next prime is 15115420204249. The reversal of 15115420204212 is 21240202451151.

It is a self number, because there is not a number n which added to its sum of digits gives 15115420204212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13400194653 + ... + 13400195780.

It is an arithmetic number, because the mean of its divisors is an integer number (1500821864304).

Almost surely, 2^{15115420204212} is an apocalyptic number.

15115420204212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15115420204212 is an abundant number, since it is smaller than the sum of its proper divisors (20904304539084).

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

15115420204212 is a wasteful number, since it uses less digits than its factorization.

15115420204212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26800390487 (or 26800390485 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 15115420204212 its reverse (21240202451151), we get a palindrome (36355622655363).

The spelling of 15115420204212 in words is "fifteen trillion, one hundred fifteen billion, four hundred twenty million, two hundred four thousand, two hundred twelve".