172420199106 has 32 divisors (see below), whose sum is σ = 347519690496. Its totient is φ = 57026970000.

The previous prime is 172420199047. The next prime is 172420199167. The reversal of 172420199106 is 601991024271.

It is a Curzon 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, 11602581 + ... + 11617431.

It is an arithmetic number, because the mean of its divisors is an integer number (10859990328).

Almost surely, 2^172420199106 is an apocalyptic number.

172420199106 is an abundant number, since it is smaller than the sum of its proper divisors (175099491390).

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

172420199106 is a wasteful number, since it uses less digits than its factorization.

172420199106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29758.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 172420199106 in words is "one hundred seventy-two billion, four hundred twenty million, one hundred ninety-nine thousand, one hundred six".