20005390337 has 2 divisors, whose sum is σ = 20005390338. Its totient is φ = 20005390336.

The previous prime is 20005390283. The next prime is 20005390351. The reversal of 20005390337 is 73309350002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10285205056 + 9720185281 = 101416^2 + 98591^2 .

It is a cyclic number.

It is not a de Polignac number, because 20005390337 - 2⁸ = 20005390081 is a prime.

It is not a weakly prime, because it can be changed into another prime (20005390837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002695168 + 10002695169.

It is an arithmetic number, because the mean of its divisors is an integer number (10002695169).

Almost surely, 2^20005390337 is an apocalyptic number.

It is an amenable number.

20005390337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20005390337 is an equidigital number, since it uses as much as digits as its factorization.

20005390337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 32.

The spelling of 20005390337 in words is "twenty billion, five million, three hundred ninety thousand, three hundred thirty-seven".