15798131712 has 396 divisors, whose sum is σ = 51871438528. Its totient is φ = 4622745600.

The previous prime is 15798131677. The next prime is 15798131731. The reversal of 15798131712 is 21713189751.

15798131712 is a `hidden beast` number, since 1 + 579 + 8 + 1 + 3 + 1 + 71 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (396).

Its product of digits (105840) is a multiple of the sum of its prime divisors (504).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 34568988 + ... + 34569444.

Almost surely, 2^15798131712 is an apocalyptic number.

15798131712 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 15798131712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25935719264).

15798131712 is an abundant number, since it is smaller than the sum of its proper divisors (36073306816).

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

15798131712 is a wasteful number, since it uses less digits than its factorization.

15798131712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 504 counting only the distinct ones).

The product of its digits is 105840, while the sum is 45.

The spelling of 15798131712 in words is "fifteen billion, seven hundred ninety-eight million, one hundred thirty-one thousand, seven hundred twelve".