172217608843 has 8 divisors (see below), whose sum is σ = 208397778912. Its totient is φ = 138931852416.

The previous prime is 172217608799. The next prime is 172217608859. The reversal of 172217608843 is 348806712271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172217608843 - 2¹³ = 172217600651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172217608883) 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, 723603280 + ... + 723603517.

It is an arithmetic number, because the mean of its divisors is an integer number (26049722364).

Almost surely, 2^172217608843 is an apocalyptic number.

172217608843 is a deficient number, since it is larger than the sum of its proper divisors (36180170069).

172217608843 is a wasteful number, since it uses less digits than its factorization.

172217608843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447206821.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 172217608843 in words is "one hundred seventy-two billion, two hundred seventeen million, six hundred eight thousand, eight hundred forty-three".