20402402183 has 2 divisors, whose sum is σ = 20402402184. Its totient is φ = 20402402182.

The previous prime is 20402402173. The next prime is 20402402213. The reversal of 20402402183 is 38120420402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20402402183 - 2⁸ = 20402401927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20402402113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201201091 + 10201201092.

It is an arithmetic number, because the mean of its divisors is an integer number (10201201092).

Almost surely, 2^20402402183 is an apocalyptic number.

20402402183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402402183 is an equidigital number, since it uses as much as digits as its factorization.

20402402183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20402402183 its reverse (38120420402), we get a palindrome (58522822585).

The spelling of 20402402183 in words is "twenty billion, four hundred two million, four hundred two thousand, one hundred eighty-three".