172445402766 has 96 divisors (see below), whose sum is σ = 433010823840. Its totient is φ = 45380127744.

The previous prime is 172445402749. The next prime is 172445402777. The reversal of 172445402766 is 667204544271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1697290 + ... + 1796018.

It is an arithmetic number, because the mean of its divisors is an integer number (4510529415).

Almost surely, 2^172445402766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172445402766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216505411920).

172445402766 is an abundant number, since it is smaller than the sum of its proper divisors (260565421074).

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

172445402766 is a wasteful number, since it uses less digits than its factorization.

172445402766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99218 (or 99211 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 172445402766 in words is "one hundred seventy-two billion, four hundred forty-five million, four hundred two thousand, seven hundred sixty-six".