172170073407 has 16 divisors (see below), whose sum is σ = 238148742240. Its totient is φ = 110508152832.

The previous prime is 172170073393. The next prime is 172170073417. The reversal of 172170073407 is 704370071271.

It is not a de Polignac number, because 172170073407 - 2⁷ = 172170073279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172170073417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2772358 + ... + 2833779.

It is an arithmetic number, because the mean of its divisors is an integer number (14884296390).

Almost surely, 2^172170073407 is an apocalyptic number.

172170073407 is a deficient number, since it is larger than the sum of its proper divisors (65978668833).

172170073407 is a wasteful number, since it uses less digits than its factorization.

172170073407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606522.

The product of its (nonzero) digits is 57624, while the sum is 39.

The spelling of 172170073407 in words is "one hundred seventy-two billion, one hundred seventy million, seventy-three thousand, four hundred seven".