15699222252 has 96 divisors (see below), whose sum is σ = 46612823040. Its totient is φ = 4476176640.

The previous prime is 15699222251. The next prime is 15699222257. The reversal of 15699222252 is 25222299651.

It is a junction number, because it is equal to n+sod(n) for n = 15699222198 and 15699222207.

It is not an unprimeable number, because it can be changed into a prime (15699222251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346852 + ... + 389492.

It is an arithmetic number, because the mean of its divisors is an integer number (485550240).

Almost surely, 2^15699222252 is an apocalyptic number.

15699222252 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 15699222252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23306411520).

15699222252 is an abundant number, since it is smaller than the sum of its proper divisors (30913600788).

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

15699222252 is a wasteful number, since it uses less digits than its factorization.

15699222252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43148 (or 43140 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The spelling of 15699222252 in words is "fifteen billion, six hundred ninety-nine million, two hundred twenty-two thousand, two hundred fifty-two".