20402200237 has 2 divisors, whose sum is σ = 20402200238. Its totient is φ = 20402200236.

The previous prime is 20402200213. The next prime is 20402200261. The reversal of 20402200237 is 73200220402.

It is a balanced prime because it is at equal distance from previous prime (20402200213) and next prime (20402200261).

It can be written as a sum of positive squares in only one way, i.e., 20365002436 + 37197801 = 142706^2 + 6099^2 .

It is a cyclic number.

It is not a de Polignac number, because 20402200237 - 2⁷ = 20402200109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20402200207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201100118 + 10201100119.

It is an arithmetic number, because the mean of its divisors is an integer number (10201100119).

Almost surely, 2^20402200237 is an apocalyptic number.

It is an amenable number.

20402200237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402200237 is an equidigital number, since it uses as much as digits as its factorization.

20402200237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 22.

Adding to 20402200237 its reverse (73200220402), we get a palindrome (93602420639).

The spelling of 20402200237 in words is "twenty billion, four hundred two million, two hundred thousand, two hundred thirty-seven".