65418242431 has 2 divisors, whose sum is σ = 65418242432. Its totient is φ = 65418242430.

The previous prime is 65418242423. The next prime is 65418242441. The reversal of 65418242431 is 13424281456.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65418242431 - 2³ = 65418242423 is a prime.

It is a super-2 number, since 2×65418242431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65418242441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32709121215 + 32709121216.

It is an arithmetic number, because the mean of its divisors is an integer number (32709121216).

Almost surely, 2^65418242431 is an apocalyptic number.

65418242431 is a deficient number, since it is larger than the sum of its proper divisors (1).

65418242431 is an equidigital number, since it uses as much as digits as its factorization.

65418242431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 40.

The spelling of 65418242431 in words is "sixty-five billion, four hundred eighteen million, two hundred forty-two thousand, four hundred thirty-one".