15999700992 has 104 divisors (see below), whose sum is σ = 46539296160. Its totient is φ = 4848353280.

The previous prime is 15999700991. The next prime is 15999700999. The reversal of 15999700992 is 29900799951.

It is not an unprimeable number, because it can be changed into a prime (15999700991) 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 7 ways as a sum of consecutive naturals, for example, 75984 + ... + 194352.

Almost surely, 2^15999700992 is an apocalyptic number.

15999700992 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 15999700992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23269648080).

15999700992 is an abundant number, since it is smaller than the sum of its proper divisors (30539595168).

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

15999700992 is a wasteful number, since it uses less digits than its factorization.

15999700992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118407 (or 118385 counting only the distinct ones).

The product of its (nonzero) digits is 4133430, while the sum is 60.

The spelling of 15999700992 in words is "fifteen billion, nine hundred ninety-nine million, seven hundred thousand, nine hundred ninety-two".