15978606272 has 112 divisors (see below), whose sum is σ = 34825033728. Its totient is φ = 7241256960.

The previous prime is 15978606271. The next prime is 15978606317. The reversal of 15978606272 is 27260687951.

It is not an unprimeable number, because it can be changed into a prime (15978606271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7655213 + ... + 7657299.

Almost surely, 2^15978606272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15978606272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17412516864).

15978606272 is an abundant number, since it is smaller than the sum of its proper divisors (18846427456).

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

15978606272 is a wasteful number, since it uses less digits than its factorization.

15978606272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 15978606272 in words is "fifteen billion, nine hundred seventy-eight million, six hundred six thousand, two hundred seventy-two".