15872215072 has 24 divisors (see below), whose sum is σ = 35712484416. Its totient is φ = 6802377792.

The previous prime is 15872215049. The next prime is 15872215091. The reversal of 15872215072 is 27051227851.

It is a happy number.

It is a super-2 number, since 2×15872215072² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35428828 + ... + 35429275.

It is an arithmetic number, because the mean of its divisors is an integer number (1488020184).

Almost surely, 2^15872215072 is an apocalyptic number.

It is an amenable number.

15872215072 is an abundant number, since it is smaller than the sum of its proper divisors (19840269344).

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

15872215072 is an equidigital number, since it uses as much as digits as its factorization.

15872215072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70858120 (or 70858112 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 15872215072 in words is "fifteen billion, eight hundred seventy-two million, two hundred fifteen thousand, seventy-two".