172330378972 has 12 divisors (see below), whose sum is σ = 319318055280. Its totient is φ = 81096648896.

The previous prime is 172330378943. The next prime is 172330378981. The reversal of 172330378972 is 279873033271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267135072 + ... + 1267135207.

It is an arithmetic number, because the mean of its divisors is an integer number (26609837940).

Almost surely, 2^172330378972 is an apocalyptic number.

It is an amenable number.

172330378972 is a deficient number, since it is larger than the sum of its proper divisors (146987676308).

172330378972 is a wasteful number, since it uses less digits than its factorization.

172330378972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534270300 (or 2534270298 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 52.

The spelling of 172330378972 in words is "one hundred seventy-two billion, three hundred thirty million, three hundred seventy-eight thousand, nine hundred seventy-two".