681101272234771 has 2 divisors, whose sum is σ = 681101272234772. Its totient is φ = 681101272234770.

The previous prime is 681101272234753. The next prime is 681101272234847. The reversal of 681101272234771 is 177432272101186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 681101272234771 - 2²³ = 681101263846163 is a prime.

It is not a weakly prime, because it can be changed into another prime (681101272334771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340550636117385 + 340550636117386.

It is an arithmetic number, because the mean of its divisors is an integer number (340550636117386).

Almost surely, 2^{681101272234771} is an apocalyptic number.

681101272234771 is a deficient number, since it is larger than the sum of its proper divisors (1).

681101272234771 is an equidigital number, since it uses as much as digits as its factorization.

681101272234771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The spelling of 681101272234771 in words is "six hundred eighty-one trillion, one hundred one billion, two hundred seventy-two million, two hundred thirty-four thousand, seven hundred seventy-one".