172555338285 has 64 divisors (see below), whose sum is σ = 345448120320. Its totient is φ = 80964360000.

The previous prime is 172555338281. The next prime is 172555338311. The reversal of 172555338285 is 582833555271.

172555338285 is a `hidden beast` number, since 1 + 7 + 2 + 5 + 553 + 3 + 8 + 2 + 85 = 666.

It is not a de Polignac number, because 172555338285 - 2² = 172555338281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172555338281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1828141 + ... + 1920210.

It is an arithmetic number, because the mean of its divisors is an integer number (5397626880).

Almost surely, 2^172555338285 is an apocalyptic number.

172555338285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172555338285 is an abundant number, since it is smaller than the sum of its proper divisors (172892782035).

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

172555338285 is a wasteful number, since it uses less digits than its factorization.

172555338285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748407 (or 3748401 counting only the distinct ones).

The product of its digits is 10080000, while the sum is 54.

The spelling of 172555338285 in words is "one hundred seventy-two billion, five hundred fifty-five million, three hundred thirty-eight thousand, two hundred eighty-five".