172539934016 has 56 divisors (see below), whose sum is σ = 346364433000. Its totient is φ = 85267759104.

The previous prime is 172539934001. The next prime is 172539934019. The reversal of 172539934016 is 610439935271.

It can be written as a sum of positive squares in 4 ways, for example, as 24850369600 + 147689564416 = 157640^2 + 384304^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172539934019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22147850 + ... + 22155638.

Almost surely, 2^172539934016 is an apocalyptic number.

172539934016 is a gapful number since it is divisible by the number (16) 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 172539934016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173182216500).

172539934016 is an abundant number, since it is smaller than the sum of its proper divisors (173824498984).

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

172539934016 is an equidigital number, since it uses as much as digits as its factorization.

172539934016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11779 (or 11769 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 172539934016 in words is "one hundred seventy-two billion, five hundred thirty-nine million, nine hundred thirty-four thousand, sixteen".