172244494445712 has 640 divisors, whose sum is σ = 499484606939136. Its totient is φ = 50819190276096.

The previous prime is 172244494445659. The next prime is 172244494445789. The reversal of 172244494445712 is 217544494442271.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 115368046438 + ... + 115368047930.

Almost surely, 2^{172244494445712} is an apocalyptic number.

172244494445712 is a gapful number since it is divisible by the number (12) 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 172244494445712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249742303469568).

172244494445712 is an abundant number, since it is smaller than the sum of its proper divisors (327240112493424).

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

172244494445712 is a wasteful number, since it uses less digits than its factorization.

172244494445712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127 (or 2121 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 60.

The spelling of 172244494445712 in words is "one hundred seventy-two trillion, two hundred forty-four billion, four hundred ninety-four million, four hundred forty-five thousand, seven hundred twelve".