172126218984 has 32 divisors (see below), whose sum is σ = 431071848000. Its totient is φ = 57274566272.

The previous prime is 172126218947. The next prime is 172126218997. The reversal of 172126218984 is 489812621271.

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, 6288564 + ... + 6315875.

It is an arithmetic number, because the mean of its divisors is an integer number (13470995250).

Almost surely, 2^172126218984 is an apocalyptic number.

It is an amenable number.

172126218984 is an abundant number, since it is smaller than the sum of its proper divisors (258945629016).

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

172126218984 is a wasteful number, since it uses less digits than its factorization.

172126218984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12605017 (or 12605013 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The spelling of 172126218984 in words is "one hundred seventy-two billion, one hundred twenty-six million, two hundred eighteen thousand, nine hundred eighty-four".