20233640039 has 2 divisors, whose sum is σ = 20233640040. Its totient is φ = 20233640038.

The previous prime is 20233639957. The next prime is 20233640041. The reversal of 20233640039 is 93004633202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20233640039 - 2¹⁶ = 20233574503 is a prime.

Together with 20233640041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20233639987 and 20233640014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20233640099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116820019 + 10116820020.

It is an arithmetic number, because the mean of its divisors is an integer number (10116820020).

Almost surely, 2^20233640039 is an apocalyptic number.

20233640039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233640039 is an equidigital number, since it uses as much as digits as its factorization.

20233640039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 20233640039 in words is "twenty billion, two hundred thirty-three million, six hundred forty thousand, thirty-nine".