20502133207 has 2 divisors, whose sum is σ = 20502133208. Its totient is φ = 20502133206.

The previous prime is 20502133193. The next prime is 20502133213. The reversal of 20502133207 is 70233120502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20502133207 - 2²³ = 20493744599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20502133607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10251066603 + 10251066604.

It is an arithmetic number, because the mean of its divisors is an integer number (10251066604).

Almost surely, 2^20502133207 is an apocalyptic number.

20502133207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20502133207 is an equidigital number, since it uses as much as digits as its factorization.

20502133207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

Adding to 20502133207 its reverse (70233120502), we get a palindrome (90735253709).

The spelling of 20502133207 in words is "twenty billion, five hundred two million, one hundred thirty-three thousand, two hundred seven".