172105250159 has 16 divisors (see below), whose sum is σ = 183971345280. Its totient is φ = 160522702560.

The previous prime is 172105250137. The next prime is 172105250179. The reversal of 172105250159 is 951052501271.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172105250159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172105250179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2268077 + ... + 2342729.

It is an arithmetic number, because the mean of its divisors is an integer number (11498209080).

Almost surely, 2^172105250159 is an apocalyptic number.

172105250159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

172105250159 is a deficient number, since it is larger than the sum of its proper divisors (11866095121).

172105250159 is a wasteful number, since it uses less digits than its factorization.

172105250159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76550.

The product of its (nonzero) digits is 31500, while the sum is 38.

The spelling of 172105250159 in words is "one hundred seventy-two billion, one hundred five million, two hundred fifty thousand, one hundred fifty-nine".