65215232443 has 2 divisors, whose sum is σ = 65215232444. Its totient is φ = 65215232442.

The previous prime is 65215232419. The next prime is 65215232449. The reversal of 65215232443 is 34423251256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65215232443 - 2²¹ = 65213135291 is a prime.

It is not a weakly prime, because it can be changed into another prime (65215232449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32607616221 + 32607616222.

It is an arithmetic number, because the mean of its divisors is an integer number (32607616222).

Almost surely, 2^65215232443 is an apocalyptic number.

65215232443 is a deficient number, since it is larger than the sum of its proper divisors (1).

65215232443 is an equidigital number, since it uses as much as digits as its factorization.

65215232443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 37.

Adding to 65215232443 its reverse (34423251256), we get a palindrome (99638483699).

The spelling of 65215232443 in words is "sixty-five billion, two hundred fifteen million, two hundred thirty-two thousand, four hundred forty-three".