16172905332 has 12 divisors (see below), whose sum is σ = 37736779136. Its totient is φ = 5390968440.

The previous prime is 16172905289. The next prime is 16172905337. The reversal of 16172905332 is 23350927161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16172905337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673871044 + ... + 673871067.

Almost surely, 2^16172905332 is an apocalyptic number.

16172905332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16172905332 is an abundant number, since it is smaller than the sum of its proper divisors (21563873804).

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

16172905332 is a wasteful number, since it uses less digits than its factorization.

16172905332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347742118 (or 1347742116 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 16172905332 in words is "sixteen billion, one hundred seventy-two million, nine hundred five thousand, three hundred thirty-two".