20636440183 has 2 divisors, whose sum is σ = 20636440184. Its totient is φ = 20636440182.

The previous prime is 20636440141. The next prime is 20636440193. The reversal of 20636440183 is 38104463602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20636440183 - 2²⁹ = 20099569271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20636440133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10318220091 + 10318220092.

It is an arithmetic number, because the mean of its divisors is an integer number (10318220092).

Almost surely, 2^20636440183 is an apocalyptic number.

20636440183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20636440183 is an equidigital number, since it uses as much as digits as its factorization.

20636440183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 20636440183 in words is "twenty billion, six hundred thirty-six million, four hundred forty thousand, one hundred eighty-three".