172342243220 has 96 divisors (see below), whose sum is σ = 435500056320. Its totient is φ = 55964805120.

The previous prime is 172342243193. The next prime is 172342243237. The reversal of 172342243220 is 22342243271.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18767030 + ... + 18776210.

It is an arithmetic number, because the mean of its divisors is an integer number (4536458920).

Almost surely, 2^172342243220 is an apocalyptic number.

172342243220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172342243220 is an abundant number, since it is smaller than the sum of its proper divisors (263157813100).

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

172342243220 is a wasteful number, since it uses less digits than its factorization.

172342243220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273 (or 16271 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 32.

Adding to 172342243220 its reverse (22342243271), we get a palindrome (194684486491).

The spelling of 172342243220 in words is "one hundred seventy-two billion, three hundred forty-two million, two hundred forty-three thousand, two hundred twenty".