172142885818 has 8 divisors (see below), whose sum is σ = 264219313248. Its totient is φ = 84069781404.

The previous prime is 172142885813. The next prime is 172142885821. The reversal of 172142885818 is 818588241271.

172142885818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (172142885813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000830646 + ... + 1000830817.

It is an arithmetic number, because the mean of its divisors is an integer number (33027414156).

Almost surely, 2^172142885818 is an apocalyptic number.

172142885818 is a deficient number, since it is larger than the sum of its proper divisors (92076427430).

172142885818 is a wasteful number, since it uses less digits than its factorization.

172142885818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001661508.

The product of its digits is 2293760, while the sum is 55.

The spelling of 172142885818 in words is "one hundred seventy-two billion, one hundred forty-two million, eight hundred eighty-five thousand, eight hundred eighteen".