15993356112 has 120 divisors (see below), whose sum is σ = 45090864000. Its totient is φ = 5291779584.

The previous prime is 15993356083. The next prime is 15993356143. The reversal of 15993356112 is 21165339951.

15993356112 is a `hidden beast` number, since 1 + 59 + 9 + 33 + 561 + 1 + 2 = 666.

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 23 ways as a sum of consecutive naturals, for example, 15245764 + ... + 15246812.

It is an arithmetic number, because the mean of its divisors is an integer number (375757200).

Almost surely, 2^15993356112 is an apocalyptic number.

15993356112 is a gapful number since it is divisible by the number (12) 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 15993356112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22545432000).

15993356112 is an abundant number, since it is smaller than the sum of its proper divisors (29097507888).

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

15993356112 is a wasteful number, since it uses less digits than its factorization.

15993356112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1736 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The spelling of 15993356112 in words is "fifteen billion, nine hundred ninety-three million, three hundred fifty-six thousand, one hundred twelve".