16669643320 has 32 divisors (see below), whose sum is σ = 40916398320. Its totient is φ = 6061688320.

The previous prime is 16669643303. The next prime is 16669643351. The reversal of 16669643320 is 2334696661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18942337 + ... + 18943216.

Almost surely, 2^16669643320 is an apocalyptic number.

16669643320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16669643320 is an abundant number, since it is smaller than the sum of its proper divisors (24246755000).

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

16669643320 is a wasteful number, since it uses less digits than its factorization.

16669643320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37885575 (or 37885571 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 46.

The spelling of 16669643320 in words is "sixteen billion, six hundred sixty-nine million, six hundred forty-three thousand, three hundred twenty".