172245677866 has 16 divisors (see below), whose sum is σ = 273574437120. Its totient is φ = 81054486720.

The previous prime is 172245677861. The next prime is 172245677881. The reversal of 172245677866 is 668776542271.

It is not an unprimeable number, because it can be changed into a prime (172245677861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2044231 + ... + 2126821.

It is an arithmetic number, because the mean of its divisors is an integer number (17098402320).

Almost surely, 2^172245677866 is an apocalyptic number.

172245677866 is a deficient number, since it is larger than the sum of its proper divisors (101328759254).

172245677866 is a wasteful number, since it uses less digits than its factorization.

172245677866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143949.

The product of its digits is 47416320, while the sum is 61.

The spelling of 172245677866 in words is "one hundred seventy-two billion, two hundred forty-five million, six hundred seventy-seven thousand, eight hundred sixty-six".