15875983872 has 240 divisors, whose sum is σ = 54057349632. Its totient is φ = 4389396480.

The previous prime is 15875983831. The next prime is 15875983873. The reversal of 15875983872 is 27838957851.

15875983872 is a `hidden beast` number, since 1 + 5 + 8 + 7 + 598 + 38 + 7 + 2 = 666.

It is a super-2 number, since 2×15875983872² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (15875983873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 991998 + ... + 1007874.

Almost surely, 2^15875983872 is an apocalyptic number.

15875983872 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 15875983872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27028674816).

15875983872 is an abundant number, since it is smaller than the sum of its proper divisors (38181365760).

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

15875983872 is a wasteful number, since it uses less digits than its factorization.

15875983872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15939 (or 15920 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 63.

The spelling of 15875983872 in words is "fifteen billion, eight hundred seventy-five million, nine hundred eighty-three thousand, eight hundred seventy-two".