172843066238 has 16 divisors (see below), whose sum is σ = 260888435280. Its totient is φ = 85880904576.

The previous prime is 172843066171. The next prime is 172843066243. The reversal of 172843066238 is 832660348271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372806 + ... + 696182.

It is an arithmetic number, because the mean of its divisors is an integer number (16305527205).

Almost surely, 2^172843066238 is an apocalyptic number.

172843066238 is a deficient number, since it is larger than the sum of its proper divisors (88045369042).

172843066238 is a wasteful number, since it uses less digits than its factorization.

172843066238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325051.

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 172843066238 in words is "one hundred seventy-two billion, eight hundred forty-three million, sixty-six thousand, two hundred thirty-eight".