15872215787152 has 20 divisors (see below), whose sum is σ = 31141689205120. Its totient is φ = 7835650831008.

The previous prime is 15872215787143. The next prime is 15872215787189. The reversal of 15872215787152 is 25178751227851.

It is a happy number.

It is a super-2 number, since 2×15872215787152² (a number of 27 digits) contains 22 as substring.

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, 6278565108 + ... + 6278567635.

It is an arithmetic number, because the mean of its divisors is an integer number (1557084460256).

Almost surely, 2^{15872215787152} is an apocalyptic number.

It is an amenable number.

15872215787152 is a deficient number, since it is larger than the sum of its proper divisors (15269473417968).

15872215787152 is a wasteful number, since it uses less digits than its factorization.

15872215787152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12557132830 (or 12557132824 counting only the distinct ones).

The product of its digits is 21952000, while the sum is 61.

The spelling of 15872215787152 in words is "fifteen trillion, eight hundred seventy-two billion, two hundred fifteen million, seven hundred eighty-seven thousand, one hundred fifty-two".