16731939904 has 189 divisors, whose sum is σ = 37648521477. Its totient is φ = 7376168448.

The previous prime is 16731939821. The next prime is 16731940009. The reversal of 16731939904 is 40993913761.

The square root of 16731939904 is 129352.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14971969600 + 1759970304 = 122360^2 + 41952^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 452214574 + ... + 452214610.

Almost surely, 2^16731939904 is an apocalyptic number.

16731939904 is the 129352-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16731939904

16731939904 is an abundant number, since it is smaller than the sum of its proper divisors (20916581573).

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

16731939904 is an equidigital number, since it uses as much as digits as its factorization.

16731939904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 52.

The spelling of 16731939904 in words is "sixteen billion, seven hundred thirty-one million, nine hundred thirty-nine thousand, nine hundred four".