16139681792 has 104 divisors (see below), whose sum is σ = 35701915116. Its totient is φ = 7247757312.

The previous prime is 16139681759. The next prime is 16139681809. The reversal of 16139681792 is 29718693161.

It can be written as a sum of positive squares in 2 ways, for example, as 16122904576 + 16777216 = 126976^2 + 4096^2 .

It is a tau number, because it is divible by the number of its divisors (104).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436207598 + ... + 436207634.

Almost surely, 2^16139681792 is an apocalyptic number.

16139681792 is a droll number since its even prime factors and its odd prime factors have the same sum.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16139681792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17850957558).

16139681792 is an abundant number, since it is smaller than the sum of its proper divisors (19562233324).

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

16139681792 is an frugal number, since it uses more digits than its factorization.

16139681792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 52 counting only the distinct ones).

The product of its digits is 979776, while the sum is 53.

The spelling of 16139681792 in words is "sixteen billion, one hundred thirty-nine million, six hundred eighty-one thousand, seven hundred ninety-two".