20466081113 has 4 divisors (see below), whose sum is σ = 20466965220. Its totient is φ = 20465197008.

The previous prime is 20466081089. The next prime is 20466081127. The reversal of 20466081113 is 31118066402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31118066402 = 2 ⋅15559033201.

It can be written as a sum of positive squares in 2 ways, for example, as 4446622489 + 16019458624 = 66683^2 + 126568^2 .

It is a cyclic number.

It is not a de Polignac number, because 20466081113 - 2²⁰ = 20465032537 is a prime.

It is a super-2 number, since 2×20466081113² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20466081113.

It is not an unprimeable number, because it can be changed into a prime (20466081143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406370 + ... + 453947.

It is an arithmetic number, because the mean of its divisors is an integer number (5116741305).

Almost surely, 2^20466081113 is an apocalyptic number.

It is an amenable number.

20466081113 is a deficient number, since it is larger than the sum of its proper divisors (884107).

20466081113 is an equidigital number, since it uses as much as digits as its factorization.

20466081113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884106.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 20466081113 in words is "twenty billion, four hundred sixty-six million, eighty-one thousand, one hundred thirteen".