15996870144 has 200 divisors, whose sum is σ = 47904021000. Its totient is φ = 5314719744.

The previous prime is 15996870143. The next prime is 15996870161. The reversal of 15996870144 is 44107869951.

15996870144 is a `hidden beast` number, since 1 + 599 + 6 + 8 + 7 + 0 + 1 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15996870143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20694142 + ... + 20694914.

It is an arithmetic number, because the mean of its divisors is an integer number (239520105).

Almost surely, 2^15996870144 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 15996870144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23952010500).

15996870144 is an abundant number, since it is smaller than the sum of its proper divisors (31907150856).

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

15996870144 is an frugal number, since it uses more digits than its factorization.

15996870144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 15996870144 in words is "fifteen billion, nine hundred ninety-six million, eight hundred seventy thousand, one hundred forty-four".