2642944771 has 2 divisors, whose sum is σ = 2642944772. Its totient is φ = 2642944770.

The previous prime is 2642944757. The next prime is 2642944849. The reversal of 2642944771 is 1774492462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2642944771 - 2⁷ = 2642944643 is a prime.

It is not a weakly prime, because it can be changed into another prime (2642944721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321472385 + 1321472386.

It is an arithmetic number, because the mean of its divisors is an integer number (1321472386).

Almost surely, 2^2642944771 is an apocalyptic number.

2642944771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642944771 is an equidigital number, since it uses as much as digits as its factorization.

2642944771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 46.

The square root of 2642944771 is about 51409.5785919317. The cubic root of 2642944771 is about 1382.5983341924.

The spelling of 2642944771 in words is "two billion, six hundred forty-two million, nine hundred forty-four thousand, seven hundred seventy-one".