2643466643 has 2 divisors, whose sum is σ = 2643466644. Its totient is φ = 2643466642.

The previous prime is 2643466633. The next prime is 2643466733. The reversal of 2643466643 is 3466643462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2643466643 - 2²⁸ = 2375031187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2643466594 and 2643466603.

It is not a weakly prime, because it can be changed into another prime (2643466603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321733321 + 1321733322.

It is an arithmetic number, because the mean of its divisors is an integer number (1321733322).

Almost surely, 2^2643466643 is an apocalyptic number.

2643466643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643466643 is an equidigital number, since it uses as much as digits as its factorization.

2643466643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 44.

The square root of 2643466643 is about 51414.6539714117. The cubic root of 2643466643 is about 1382.6893301501.

The spelling of 2643466643 in words is "two billion, six hundred forty-three million, four hundred sixty-six thousand, six hundred forty-three".