15663932444160 has 5120 divisors, whose sum is σ = 78983744716800. Its totient is φ = 2837879193600.

The previous prime is 15663932444137. The next prime is 15663932444177. The reversal of 15663932444160 is 6144423936651.

15663932444160 is a `hidden beast` number, since 1 + 5 + 6 + 6 + 3 + 9 + 32 + 444 + 160 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 15663932444097 and 15663932444106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 143705802186 + ... + 143705802294.

It is an arithmetic number, because the mean of its divisors is an integer number (15426512640).

Almost surely, 2^{15663932444160} is an apocalyptic number.

15663932444160 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 15663932444160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39491872358400).

15663932444160 is an abundant number, since it is smaller than the sum of its proper divisors (63319812272640).

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

15663932444160 is a wasteful number, since it uses less digits than its factorization.

15663932444160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 15663932444160 in words is "fifteen trillion, six hundred sixty-three billion, nine hundred thirty-two million, four hundred forty-four thousand, one hundred sixty".