681562828265186 has 8 divisors (see below), whose sum is σ = 1168393419883200. Its totient is φ = 292098354970788.

The previous prime is 681562828265173. The next prime is 681562828265237.

It is a happy number.

681562828265186 is nontrivially palindromic in base 10.

681562828265186 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 a super-2 number, since 2×681562828265186² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24341529580886 + ... + 24341529580913.

It is an arithmetic number, because the mean of its divisors is an integer number (146049177485400).

Almost surely, 2^{681562828265186} is an apocalyptic number.

681562828265186 is a deficient number, since it is larger than the sum of its proper divisors (486830591618014).

681562828265186 is a wasteful number, since it uses less digits than its factorization.

681562828265186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48683059161808.

The product of its digits is 1061683200, while the sum is 74.

The spelling of 681562828265186 in words is "six hundred eighty-one trillion, five hundred sixty-two billion, eight hundred twenty-eight million, two hundred sixty-five thousand, one hundred eighty-six".