15669873872 has 20 divisors (see below), whose sum is σ = 31680397920. Its totient is φ = 7494287328.

The previous prime is 15669873871. The next prime is 15669873883. The reversal of 15669873872 is 27837896651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15669873871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21290222 + ... + 21290957.

It is an arithmetic number, because the mean of its divisors is an integer number (1584019896).

Almost surely, 2^15669873872 is an apocalyptic number.

It is an amenable number.

15669873872 is an abundant number, since it is smaller than the sum of its proper divisors (16010524048).

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

15669873872 is a wasteful number, since it uses less digits than its factorization.

15669873872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42581210 (or 42581204 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 62.

The spelling of 15669873872 in words is "fifteen billion, six hundred sixty-nine million, eight hundred seventy-three thousand, eight hundred seventy-two".