16662309372 has 72 divisors (see below), whose sum is σ = 42332828720. Its totient is φ = 5525936640.

The previous prime is 16662309361. The next prime is 16662309403. The reversal of 16662309372 is 27390326661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6561279 + ... + 6563817.

Almost surely, 2^16662309372 is an apocalyptic number.

16662309372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16662309372 is an abundant number, since it is smaller than the sum of its proper divisors (25670519348).

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

16662309372 is a wasteful number, since it uses less digits than its factorization.

16662309372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403 (or 3398 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 16662309372 in words is "sixteen billion, six hundred sixty-two million, three hundred nine thousand, three hundred seventy-two".