20012320037 has 2 divisors, whose sum is σ = 20012320038. Its totient is φ = 20012320036.

The previous prime is 20012319989. The next prime is 20012320039. The reversal of 20012320037 is 73002321002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18957434596 + 1054885441 = 137686^2 + 32479^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012320037 - 2⁸ = 20012319781 is a prime.

Together with 20012320039, 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 (20012320039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006160018 + 10006160019.

It is an arithmetic number, because the mean of its divisors is an integer number (10006160019).

Almost surely, 2^20012320037 is an apocalyptic number.

It is an amenable number.

20012320037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012320037 is an equidigital number, since it uses as much as digits as its factorization.

20012320037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

Adding to 20012320037 its reverse (73002321002), we get a palindrome (93014641039).

The spelling of 20012320037 in words is "twenty billion, twelve million, three hundred twenty thousand, thirty-seven".