172029122244 has 480 divisors, whose sum is σ = 565837848576. Its totient is φ = 44442639360.

The previous prime is 172029122203. The next prime is 172029122273. The reversal of 172029122244 is 442221920271.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 172029122199 and 172029122208.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 194823027 + ... + 194823909.

Almost surely, 2^172029122244 is an apocalyptic number.

172029122244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172029122244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282918924288).

172029122244 is an abundant number, since it is smaller than the sum of its proper divisors (393808726332).

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

172029122244 is a wasteful number, since it uses less digits than its factorization.

172029122244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 172029122244 in words is "one hundred seventy-two billion, twenty-nine million, one hundred twenty-two thousand, two hundred forty-four".