681101272234847 has 2 divisors, whose sum is σ = 681101272234848. Its totient is φ = 681101272234846.

The previous prime is 681101272234771. The next prime is 681101272234853. The reversal of 681101272234847 is 748432272101186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681101272234847 - 2³⁰ = 681100198493023 is a prime.

It is a super-2 number, since 2×681101272234847² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 681101272234792 and 681101272234801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681101272734847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340550636117423 + 340550636117424.

It is an arithmetic number, because the mean of its divisors is an integer number (340550636117424).

Almost surely, 2^{681101272234847} is an apocalyptic number.

681101272234847 is a deficient number, since it is larger than the sum of its proper divisors (1).

681101272234847 is an equidigital number, since it uses as much as digits as its factorization.

681101272234847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 681101272234847 in words is "six hundred eighty-one trillion, one hundred one billion, two hundred seventy-two million, two hundred thirty-four thousand, eight hundred forty-seven".