681101272234811 has 16 divisors (see below), whose sum is σ = 700030401840000. Its totient is φ = 662312739375168.

The previous prime is 681101272234771. The next prime is 681101272234847. The reversal of 681101272234811 is 118432272101186.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-681101272234811 is a prime.

It is a super-2 number, since 2×681101272234811² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681101272237811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359225615 + ... + 361116663.

It is an arithmetic number, because the mean of its divisors is an integer number (43751900115000).

Almost surely, 2^{681101272234811} is an apocalyptic number.

681101272234811 is a deficient number, since it is larger than the sum of its proper divisors (18929129605189).

681101272234811 is a wasteful number, since it uses less digits than its factorization.

681101272234811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928218.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 681101272234811 in words is "six hundred eighty-one trillion, one hundred one billion, two hundred seventy-two million, two hundred thirty-four thousand, eight hundred eleven".