4000643562079 has 2 divisors, whose sum is σ = 4000643562080. Its totient is φ = 4000643562078.

The previous prime is 4000643562077. The next prime is 4000643562089. The reversal of 4000643562079 is 9702653460004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4000643562079 - 2¹ = 4000643562077 is a prime.

Together with 4000643562077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000643562077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000321781039 + 2000321781040.

It is an arithmetic number, because the mean of its divisors is an integer number (2000321781040).

Almost surely, 2^{4000643562079} is an apocalyptic number.

4000643562079 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000643562079 is an equidigital number, since it uses as much as digits as its factorization.

4000643562079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 4000643562079 in words is "four trillion, six hundred forty-three million, five hundred sixty-two thousand, seventy-nine".