11638710073 has 2 divisors, whose sum is σ = 11638710074. Its totient is φ = 11638710072.

The previous prime is 11638710071. The next prime is 11638710077. The reversal of 11638710073 is 37001783611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11543998249 + 94711824 = 107443^2 + 9732^2 .

It is a cyclic number.

It is not a de Polignac number, because 11638710073 - 2¹ = 11638710071 is a prime.

Together with 11638710071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11638710071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819355036 + 5819355037.

It is an arithmetic number, because the mean of its divisors is an integer number (5819355037).

Almost surely, 2^11638710073 is an apocalyptic number.

It is an amenable number.

11638710073 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638710073 is an equidigital number, since it uses as much as digits as its factorization.

11638710073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 11638710073 in words is "eleven billion, six hundred thirty-eight million, seven hundred ten thousand, seventy-three".