15927120720 has 600 divisors, whose sum is σ = 65106797184. Its totient is φ = 3597737472.

The previous prime is 15927120689. The next prime is 15927120721. The reversal of 15927120720 is 2702172951.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15927120721) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 32704317 + ... + 32704803.

Almost surely, 2^15927120720 is an apocalyptic number.

15927120720 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 15927120720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32553398592).

15927120720 is an abundant number, since it is smaller than the sum of its proper divisors (49179676464).

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

15927120720 is a wasteful number, since it uses less digits than its factorization.

15927120720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The spelling of 15927120720 in words is "fifteen billion, nine hundred twenty-seven million, one hundred twenty thousand, seven hundred twenty".