172206819162 has 192 divisors, whose sum is σ = 468017971200. Its totient is φ = 44648392320.

The previous prime is 172206819119. The next prime is 172206819163. The reversal of 172206819162 is 261918602271.

It is not an unprimeable number, because it can be changed into a prime (172206819163) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8807337 + ... + 8826867.

It is an arithmetic number, because the mean of its divisors is an integer number (2437593600).

Almost surely, 2^172206819162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172206819162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234008985600).

172206819162 is an abundant number, since it is smaller than the sum of its proper divisors (295811152038).

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

172206819162 is a wasteful number, since it uses less digits than its factorization.

172206819162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19721 (or 19718 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 172206819162 in words is "one hundred seventy-two billion, two hundred six million, eight hundred nineteen thousand, one hundred sixty-two".