172320000232 has 8 divisors (see below), whose sum is σ = 323100000450. Its totient is φ = 86160000112.

The previous prime is 172320000199. The next prime is 172320000253. The reversal of 172320000232 is 232000023271.

It can be written as a sum of positive squares in only one way, i.e., 172319632996 + 367236 = 415114^2 + 606^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10770000007 + ... + 10770000022.

Almost surely, 2^172320000232 is an apocalyptic number.

It is an amenable number.

172320000232 is a deficient number, since it is larger than the sum of its proper divisors (150780000218).

172320000232 is a wasteful number, since it uses less digits than its factorization.

172320000232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21540000035 (or 21540000031 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The spelling of 172320000232 in words is "one hundred seventy-two billion, three hundred twenty million, two hundred thirty-two", and thus it is an aban number.