16669782740 has 48 divisors (see below), whose sum is σ = 37720423440. Its totient is φ = 6151557120.

The previous prime is 16669782721. The next prime is 16669782757. The reversal of 16669782740 is 4728796661.

16669782740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1258546576 + 15411236164 = 35476^2 + 124142^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474170 + ... + 508110.

It is an arithmetic number, because the mean of its divisors is an integer number (785842155).

Almost surely, 2^16669782740 is an apocalyptic number.

16669782740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16669782740 is an abundant number, since it is smaller than the sum of its proper divisors (21050640700).

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

16669782740 is a wasteful number, since it uses less digits than its factorization.

16669782740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35852 (or 35850 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 16669782740 in words is "sixteen billion, six hundred sixty-nine million, seven hundred eighty-two thousand, seven hundred forty".