681672767276186 has 32 divisors (see below), whose sum is σ = 1182762456720768. Its totient is φ = 288600931998720.

The previous prime is 681672767276183. The next prime is 681672767276191.

681672767276186 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 681672767276186.

It is not an unprimeable number, because it can be changed into a prime (681672767276183) 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, 11537435 + ... + 38684078.

It is an arithmetic number, because the mean of its divisors is an integer number (36961326772524).

Almost surely, 2^{681672767276186} is an apocalyptic number.

681672767276186 is a deficient number, since it is larger than the sum of its proper divisors (501089689444582).

681672767276186 is a wasteful number, since it uses less digits than its factorization.

681672767276186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50233286.

The product of its digits is 4779565056, while the sum is 80.

The spelling of 681672767276186 in words is "six hundred eighty-one trillion, six hundred seventy-two billion, seven hundred sixty-seven million, two hundred seventy-six thousand, one hundred eighty-six".