15212663652 has 48 divisors (see below), whose sum is σ = 37541638400. Its totient is φ = 4781216160.

The previous prime is 15212663647. The next prime is 15212663659. The reversal of 15212663652 is 25636621251.

It is a self number, because there is not a number n which added to its sum of digits gives 15212663652.

It is not an unprimeable number, because it can be changed into a prime (15212663659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110002 + ... + 206217.

Almost surely, 2^15212663652 is an apocalyptic number.

15212663652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15212663652 is an abundant number, since it is smaller than the sum of its proper divisors (22328974748).

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

15212663652 is a wasteful number, since it uses less digits than its factorization.

15212663652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316456 (or 316454 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The spelling of 15212663652 in words is "fifteen billion, two hundred twelve million, six hundred sixty-three thousand, six hundred fifty-two".