172555808126 has 16 divisors (see below), whose sum is σ = 283468474800. Its totient is φ = 78291291648.

The previous prime is 172555808123. The next prime is 172555808219. The reversal of 172555808126 is 621808555271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172555808123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56242211 + ... + 56245278.

It is an arithmetic number, because the mean of its divisors is an integer number (17716779675).

Almost surely, 2^172555808126 is an apocalyptic number.

172555808126 is a deficient number, since it is larger than the sum of its proper divisors (110912666674).

172555808126 is a wasteful number, since it uses less digits than its factorization.

172555808126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112487563.

The product of its (nonzero) digits is 1344000, while the sum is 50.

The spelling of 172555808126 in words is "one hundred seventy-two billion, five hundred fifty-five million, eight hundred eight thousand, one hundred twenty-six".