15806138112 has 54 divisors (see below), whose sum is σ = 45572999472. Its totient is φ = 5268711936.

The previous prime is 15806138099. The next prime is 15806138129. The reversal of 15806138112 is 21183160851.

15806138112 is a `hidden beast` number, since 1 + 580 + 61 + 3 + 8 + 1 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3427848 + ... + 3432455.

Almost surely, 2^15806138112 is an apocalyptic number.

15806138112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15806138112 is an abundant number, since it is smaller than the sum of its proper divisors (29766861360).

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

15806138112 is an equidigital number, since it uses as much as digits as its factorization.

15806138112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6860325 (or 6860308 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

Adding to 15806138112 its reverse (21183160851), we get a palindrome (36989298963).

The spelling of 15806138112 in words is "fifteen billion, eight hundred six million, one hundred thirty-eight thousand, one hundred twelve".