172361381280 has 192 divisors, whose sum is σ = 592509593088. Its totient is φ = 41769538560.

The previous prime is 172361381263. The next prime is 172361381287. The reversal of 172361381280 is 82183163271.

It is not an unprimeable number, because it can be changed into a prime (172361381287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23793339 + ... + 23800581.

It is an arithmetic number, because the mean of its divisors is an integer number (3085987464).

Almost surely, 2^172361381280 is an apocalyptic number.

172361381280 is a gapful number since it is divisible by the number (10) 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 172361381280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296254796544).

172361381280 is an abundant number, since it is smaller than the sum of its proper divisors (420148211808).

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

172361381280 is a wasteful number, since it uses less digits than its factorization.

172361381280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11779 (or 11771 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 172361381280 in words is "one hundred seventy-two billion, three hundred sixty-one million, three hundred eighty-one thousand, two hundred eighty".