15969252380 has 12 divisors (see below), whose sum is σ = 33535430040. Its totient is φ = 6387700944.

The previous prime is 15969252371. The next prime is 15969252419. The reversal of 15969252380 is 8325296951.

It is a super-2 number, since 2×15969252380² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399231290 + ... + 399231329.

It is an arithmetic number, because the mean of its divisors is an integer number (2794619170).

Almost surely, 2^15969252380 is an apocalyptic number.

15969252380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15969252380 is an abundant number, since it is smaller than the sum of its proper divisors (17566177660).

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

15969252380 is a wasteful number, since it uses less digits than its factorization.

15969252380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798462628 (or 798462626 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 15969252380 in words is "fifteen billion, nine hundred sixty-nine million, two hundred fifty-two thousand, three hundred eighty".