15648927872 has 24 divisors (see below), whose sum is σ = 31178418285. Its totient is φ = 7823756288.

The previous prime is 15648927871. The next prime is 15648927883. The reversal of 15648927872 is 27872984651.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 13929664576 + 1719263296 = 118024^2 + 41464^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=88456.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15648927871) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1409768 + ... + 1420824.

Almost surely, 2^15648927872 is an apocalyptic number.

It is an amenable number.

15648927872 is a deficient number, since it is larger than the sum of its proper divisors (15529490413).

15648927872 is an frugal number, since it uses more digits than its factorization.

15648927872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22128 (or 11059 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 59.

The spelling of 15648927872 in words is "fifteen billion, six hundred forty-eight million, nine hundred twenty-seven thousand, eight hundred seventy-two".