172616386998 has 128 divisors (see below), whose sum is σ = 386016067584. Its totient is φ = 51022630400.

The previous prime is 172616386951. The next prime is 172616387051. The reversal of 172616386998 is 899683616271.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 266794711 + ... + 266795357.

It is an arithmetic number, because the mean of its divisors is an integer number (3015750528).

Almost surely, 2^172616386998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172616386998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193008033792).

172616386998 is an abundant number, since it is smaller than the sum of its proper divisors (213399680586).

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

172616386998 is a wasteful number, since it uses less digits than its factorization.

172616386998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290.

The product of its digits is 47029248, while the sum is 66.

The spelling of 172616386998 in words is "one hundred seventy-two billion, six hundred sixteen million, three hundred eighty-six thousand, nine hundred ninety-eight".