2669764578643 has 2 divisors, whose sum is σ = 2669764578644. Its totient is φ = 2669764578642.

The previous prime is 2669764578601. The next prime is 2669764578671. The reversal of 2669764578643 is 3468754679662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2669764578643 is a prime.

It is not a weakly prime, because it can be changed into another prime (2669764578683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334882289321 + 1334882289322.

It is an arithmetic number, because the mean of its divisors is an integer number (1334882289322).

Almost surely, 2^{2669764578643} is an apocalyptic number.

2669764578643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2669764578643 is an equidigital number, since it uses as much as digits as its factorization.

2669764578643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2194698240, while the sum is 73.

The spelling of 2669764578643 in words is "two trillion, six hundred sixty-nine billion, seven hundred sixty-four million, five hundred seventy-eight thousand, six hundred forty-three".