172479266868 has 24 divisors (see below), whose sum is σ = 402510763872. Its totient is φ = 57484640224.

The previous prime is 172479266753. The next prime is 172479266873. The reversal of 172479266868 is 868662974271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 172479266799 and 172479266808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970755 + ... + 1134602.

It is an arithmetic number, because the mean of its divisors is an integer number (16771281828).

Almost surely, 2^172479266868 is an apocalyptic number.

It is an amenable number.

172479266868 is an abundant number, since it is smaller than the sum of its proper divisors (230031497004).

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

172479266868 is a wasteful number, since it uses less digits than its factorization.

172479266868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112191 (or 2112189 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 66.

The spelling of 172479266868 in words is "one hundred seventy-two billion, four hundred seventy-nine million, two hundred sixty-six thousand, eight hundred sixty-eight".