2643365423 has 2 divisors, whose sum is σ = 2643365424. Its totient is φ = 2643365422.

The previous prime is 2643365419. The next prime is 2643365447. The reversal of 2643365423 is 3245633462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2643365423 - 2² = 2643365419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643365453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321682711 + 1321682712.

It is an arithmetic number, because the mean of its divisors is an integer number (1321682712).

Almost surely, 2^2643365423 is an apocalyptic number.

2643365423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643365423 is an equidigital number, since it uses as much as digits as its factorization.

2643365423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 38.

The square root of 2643365423 is about 51413.6696122733. The cubic root of 2643365423 is about 1382.6716819102.

Adding to 2643365423 its reverse (3245633462), we get a palindrome (5888998885).

The spelling of 2643365423 in words is "two billion, six hundred forty-three million, three hundred sixty-five thousand, four hundred twenty-three".