20113712693 has 2 divisors, whose sum is σ = 20113712694. Its totient is φ = 20113712692.

The previous prime is 20113712687. The next prime is 20113712737. The reversal of 20113712693 is 39621731102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12045721009 + 8067991684 = 109753^2 + 89822^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113712693 - 2¹² = 20113708597 is a prime.

It is a super-2 number, since 2×20113712693² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113712623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056856346 + 10056856347.

It is an arithmetic number, because the mean of its divisors is an integer number (10056856347).

Almost surely, 2^20113712693 is an apocalyptic number.

It is an amenable number.

20113712693 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113712693 is an equidigital number, since it uses as much as digits as its factorization.

20113712693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 20113712693 in words is "twenty billion, one hundred thirteen million, seven hundred twelve thousand, six hundred ninety-three".