20034140237 has 2 divisors, whose sum is σ = 20034140238. Its totient is φ = 20034140236.

The previous prime is 20034140183. The next prime is 20034140239. The reversal of 20034140237 is 73204143002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18315291556 + 1718848681 = 135334^2 + 41459^2 .

It is a cyclic number.

It is not a de Polignac number, because 20034140237 - 2²⁴ = 20017363021 is a prime.

Together with 20034140239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20034140239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10017070118 + 10017070119.

It is an arithmetic number, because the mean of its divisors is an integer number (10017070119).

Almost surely, 2^20034140237 is an apocalyptic number.

It is an amenable number.

20034140237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20034140237 is an equidigital number, since it uses as much as digits as its factorization.

20034140237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 20034140237 its reverse (73204143002), we get a palindrome (93238283239).

The spelling of 20034140237 in words is "twenty billion, thirty-four million, one hundred forty thousand, two hundred thirty-seven".