20413032397 has 2 divisors, whose sum is σ = 20413032398. Its totient is φ = 20413032396.

The previous prime is 20413032391. The next prime is 20413032407. The reversal of 20413032397 is 79323031402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20378704516 + 34327881 = 142754^2 + 5859^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413032397 - 2²³ = 20404643789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413032391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206516198 + 10206516199.

It is an arithmetic number, because the mean of its divisors is an integer number (10206516199).

Almost surely, 2^20413032397 is an apocalyptic number.

It is an amenable number.

20413032397 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413032397 is an equidigital number, since it uses as much as digits as its factorization.

20413032397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

Adding to 20413032397 its reverse (79323031402), we get a palindrome (99736063799).

The spelling of 20413032397 in words is "twenty billion, four hundred thirteen million, thirty-two thousand, three hundred ninety-seven".