15982278720 has 224 divisors, whose sum is σ = 52153718400. Its totient is φ = 4145086464.

The previous prime is 15982278671. The next prime is 15982278727. The reversal of 15982278720 is 2787228951.

It is not an unprimeable number, because it can be changed into a prime (15982278727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5492626 + ... + 5495534.

It is an arithmetic number, because the mean of its divisors is an integer number (232829100).

Almost surely, 2^15982278720 is an apocalyptic number.

15982278720 is a gapful number since it is divisible by the number (10) 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 15982278720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26076859200).

15982278720 is an abundant number, since it is smaller than the sum of its proper divisors (36171439680).

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

15982278720 is a wasteful number, since it uses less digits than its factorization.

15982278720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085 (or 3075 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 15982278720 in words is "fifteen billion, nine hundred eighty-two million, two hundred seventy-eight thousand, seven hundred twenty".