15997188130560 has 2016 divisors, whose sum is σ = 73792380469248. Its totient is φ = 3228087582720.

The previous prime is 15997188130529. The next prime is 15997188130571. The reversal of 15997188130560 is 6503188179951.

15997188130560 is a `hidden beast` number, since 1 + 5 + 9 + 97 + 188 + 1 + 305 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 1953016065 + ... + 1953024255.

It is an arithmetic number, because the mean of its divisors is an integer number (36603363328).

Almost surely, 2^{15997188130560} is an apocalyptic number.

15997188130560 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 15997188130560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36896190234624).

15997188130560 is an abundant number, since it is smaller than the sum of its proper divisors (57795192338688).

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

15997188130560 is an equidigital number, since it uses as much as digits as its factorization.

15997188130560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273 (or 8244 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 63.

The spelling of 15997188130560 in words is "fifteen trillion, nine hundred ninety-seven billion, one hundred eighty-eight million, one hundred thirty thousand, five hundred sixty".