20616230237 has 2 divisors, whose sum is σ = 20616230238. Its totient is φ = 20616230236.

The previous prime is 20616230233. The next prime is 20616230267. The reversal of 20616230237 is 73203261602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19605880441 + 1010349796 = 140021^2 + 31786^2 .

It is a cyclic number.

It is not a de Polignac number, because 20616230237 - 2² = 20616230233 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20616230233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10308115118 + 10308115119.

It is an arithmetic number, because the mean of its divisors is an integer number (10308115119).

Almost surely, 2^20616230237 is an apocalyptic number.

It is an amenable number.

20616230237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20616230237 is an equidigital number, since it uses as much as digits as its factorization.

20616230237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

Adding to 20616230237 its reverse (73203261602), we get a palindrome (93819491839).

The spelling of 20616230237 in words is "twenty billion, six hundred sixteen million, two hundred thirty thousand, two hundred thirty-seven".