20113041187 has 2 divisors, whose sum is σ = 20113041188. Its totient is φ = 20113041186.

The previous prime is 20113041163. The next prime is 20113041191. The reversal of 20113041187 is 78114031102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20113041187 - 2¹¹ = 20113039139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20113041787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056520593 + 10056520594.

It is an arithmetic number, because the mean of its divisors is an integer number (10056520594).

Almost surely, 2^20113041187 is an apocalyptic number.

20113041187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113041187 is an equidigital number, since it uses as much as digits as its factorization.

20113041187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 20113041187 its reverse (78114031102), we get a palindrome (98227072289).

The spelling of 20113041187 in words is "twenty billion, one hundred thirteen million, forty-one thousand, one hundred eighty-seven".