172507243406 has 8 divisors (see below), whose sum is σ = 258872841264. Its totient is φ = 86216296320.

The previous prime is 172507243393. The next prime is 172507243421. The reversal of 172507243406 is 604342705271.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 18656915 + ... + 18666158.

It is an arithmetic number, because the mean of its divisors is an integer number (32359105158).

Almost surely, 2^172507243406 is an apocalyptic number.

172507243406 is a deficient number, since it is larger than the sum of its proper divisors (86365597858).

172507243406 is a wasteful number, since it uses less digits than its factorization.

172507243406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37325386.

The product of its (nonzero) digits is 282240, while the sum is 41.

Adding to 172507243406 its reverse (604342705271), we get a palindrome (776849948677).

The spelling of 172507243406 in words is "one hundred seventy-two billion, five hundred seven million, two hundred forty-three thousand, four hundred six".