172243548208 has 20 divisors (see below), whose sum is σ = 353352573720. Its totient is φ = 81055787264.

The previous prime is 172243548203. The next prime is 172243548247. The reversal of 172243548208 is 802845342271.

It is a super-2 number, since 2×172243548208² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172243548203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316623898 + ... + 316624441.

It is an arithmetic number, because the mean of its divisors is an integer number (17667628686).

Almost surely, 2^172243548208 is an apocalyptic number.

It is an amenable number.

172243548208 is an abundant number, since it is smaller than the sum of its proper divisors (181109025512).

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

172243548208 is a wasteful number, since it uses less digits than its factorization.

172243548208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633248364 (or 633248358 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 46.

The spelling of 172243548208 in words is "one hundred seventy-two billion, two hundred forty-three million, five hundred forty-eight thousand, two hundred eight".