16669643292 has 48 divisors (see below), whose sum is σ = 43230050080. Its totient is φ = 5554946304.

The previous prime is 16669643279. The next prime is 16669643303. The reversal of 16669643292 is 29234696661.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389298 + ... + 429990.

Almost surely, 2^16669643292 is an apocalyptic number.

16669643292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16669643292 is an abundant number, since it is smaller than the sum of its proper divisors (26560406788).

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

16669643292 is a wasteful number, since it uses less digits than its factorization.

16669643292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44499 (or 44491 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The spelling of 16669643292 in words is "sixteen billion, six hundred sixty-nine million, six hundred forty-three thousand, two hundred ninety-two".