15887081472 has 112 divisors (see below), whose sum is σ = 43398960192. Its totient is φ = 5166202880.

The previous prime is 15887081447. The next prime is 15887081489. The reversal of 15887081472 is 27418078851.

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 7 ways as a sum of consecutive naturals, for example, 999733 + ... + 1015499.

It is an arithmetic number, because the mean of its divisors is an integer number (387490716).

Almost surely, 2^15887081472 is an apocalyptic number.

15887081472 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 15887081472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21699480096).

15887081472 is an abundant number, since it is smaller than the sum of its proper divisors (27511878720).

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

15887081472 is an equidigital number, since it uses as much as digits as its factorization.

15887081472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15837 (or 15813 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 51.

The spelling of 15887081472 in words is "fifteen billion, eight hundred eighty-seven million, eighty-one thousand, four hundred seventy-two".