172873144430 has 32 divisors (see below), whose sum is σ = 355779103680. Its totient is φ = 59245067520.

The previous prime is 172873144417. The next prime is 172873144447. The reversal of 172873144430 is 34441378271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373151 + ... + 696410.

It is an arithmetic number, because the mean of its divisors is an integer number (11118096990).

Almost surely, 2^172873144430 is an apocalyptic number.

172873144430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172873144430 is an abundant number, since it is smaller than the sum of its proper divisors (182905959250).

172873144430 is a wasteful number, since it uses less digits than its factorization.

172873144430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071884.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 172873144430 in words is "one hundred seventy-two billion, eight hundred seventy-three million, one hundred forty-four thousand, four hundred thirty".