10681806861 has 24 divisors (see below), whose sum is σ = 16835326560. Its totient is φ = 6472519200.

The previous prime is 10681806857. The next prime is 10681806913. The reversal of 10681806861 is 16860818601.

It is not a de Polignac number, because 10681806861 - 2² = 10681806857 is a prime.

It is a super-2 number, since 2×10681806861² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10681805861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 754395 + ... + 768423.

It is an arithmetic number, because the mean of its divisors is an integer number (701471940).

Almost surely, 2^10681806861 is an apocalyptic number.

10681806861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10681806861 is a deficient number, since it is larger than the sum of its proper divisors (6153519699).

10681806861 is a wasteful number, since it uses less digits than its factorization.

10681806861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21737 (or 21734 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 10681806861 in words is "ten billion, six hundred eighty-one million, eight hundred six thousand, eight hundred sixty-one".