172591259161 has 8 divisors (see below), whose sum is σ = 175625042400. Its totient is φ = 169561092960.

The previous prime is 172591259143. The next prime is 172591259167. The reversal of 172591259161 is 161952195271.

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

It is a cyclic number.

It is not a de Polignac number, because 172591259161 - 2⁷ = 172591259033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172591259167) 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, 807900 + ... + 998941.

It is an arithmetic number, because the mean of its divisors is an integer number (21953130300).

Almost surely, 2^172591259161 is an apocalyptic number.

It is an amenable number.

172591259161 is a deficient number, since it is larger than the sum of its proper divisors (3033783239).

172591259161 is a wasteful number, since it uses less digits than its factorization.

172591259161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808519.

The product of its digits is 340200, while the sum is 49.

The spelling of 172591259161 in words is "one hundred seventy-two billion, five hundred ninety-one million, two hundred fifty-nine thousand, one hundred sixty-one".