172052167205 has 4 divisors (see below), whose sum is σ = 206462600652. Its totient is φ = 137641733760.

The previous prime is 172052167187. The next prime is 172052167277. The reversal of 172052167205 is 502761250271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122568609604 + 49483557601 = 350098^2 + 222449^2 .

It is a de Polignac number, because none of the positive numbers 2^k-172052167205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17205216716 + ... + 17205216725.

It is an arithmetic number, because the mean of its divisors is an integer number (51615650163).

Almost surely, 2^172052167205 is an apocalyptic number.

It is an amenable number.

172052167205 is a deficient number, since it is larger than the sum of its proper divisors (34410433447).

172052167205 is an equidigital number, since it uses as much as digits as its factorization.

172052167205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34410433446.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 172052167205 in words is "one hundred seventy-two billion, fifty-two million, one hundred sixty-seven thousand, two hundred five".