15663106944 has 384 divisors, whose sum is σ = 50853160800. Its totient is φ = 4729503744.

The previous prime is 15663106937. The next prime is 15663106981. The reversal of 15663106944 is 44960136651.

15663106944 is a `hidden beast` number, since 1 + 5 + 6 + 631 + 0 + 6 + 9 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 15663106944.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49410274 + ... + 49410590.

Almost surely, 2^15663106944 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 15663106944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25426580400).

15663106944 is an abundant number, since it is smaller than the sum of its proper divisors (35190053856).

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

15663106944 is a wasteful number, since it uses less digits than its factorization.

15663106944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 15663106944 in words is "fifteen billion, six hundred sixty-three million, one hundred six thousand, nine hundred forty-four".