20111135593 has 2 divisors, whose sum is σ = 20111135594. Its totient is φ = 20111135592.

The previous prime is 20111135587. The next prime is 20111135663. The reversal of 20111135593 is 39553111102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19748118784 + 363016809 = 140528^2 + 19053^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111135593 - 2⁹ = 20111135081 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111135573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055567796 + 10055567797.

It is an arithmetic number, because the mean of its divisors is an integer number (10055567797).

Almost surely, 2^20111135593 is an apocalyptic number.

It is an amenable number.

20111135593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111135593 is an equidigital number, since it uses as much as digits as its factorization.

20111135593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 31.

Adding to 20111135593 its reverse (39553111102), we get a palindrome (59664246695).

The spelling of 20111135593 in words is "twenty billion, one hundred eleven million, one hundred thirty-five thousand, five hundred ninety-three".