172271942844 has 24 divisors (see below), whose sum is σ = 407474277840. Its totient is φ = 56637350784.

The previous prime is 172271942837. The next prime is 172271942929. The reversal of 172271942844 is 448249172271.

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, 98327859 + ... + 98329610.

It is an arithmetic number, because the mean of its divisors is an integer number (16978094910).

Almost surely, 2^172271942844 is an apocalyptic number.

It is an amenable number.

172271942844 is an abundant number, since it is smaller than the sum of its proper divisors (235202334996).

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

172271942844 is a wasteful number, since it uses less digits than its factorization.

172271942844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196657549 (or 196657547 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The spelling of 172271942844 in words is "one hundred seventy-two billion, two hundred seventy-one million, nine hundred forty-two thousand, eight hundred forty-four".