18685066058681 has 8 divisors (see below), whose sum is σ = 20539309256928. Its totient is φ = 16856756332000.

The previous prime is 18685066058651. The next prime is 18685066058699.

18685066058681 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18685066058681 is a prime.

It is a super-2 number, since 2×18685066058681² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18685066058641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6483366380 + ... + 6483369261.

It is an arithmetic number, because the mean of its divisors is an integer number (2567413657116).

Almost surely, 2^{18685066058681} is an apocalyptic number.

18685066058681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18685066058681 is a deficient number, since it is larger than the sum of its proper divisors (1854243198247).

18685066058681 is a wasteful number, since it uses less digits than its factorization.

18685066058681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12966735783.

The product of its (nonzero) digits is 132710400, while the sum is 68.

The spelling of 18685066058681 in words is "eighteen trillion, six hundred eighty-five billion, sixty-six million, fifty-eight thousand, six hundred eighty-one".