2144776643 has 2 divisors, whose sum is σ = 2144776644. Its totient is φ = 2144776642.

The previous prime is 2144776631. The next prime is 2144776663. The reversal of 2144776643 is 3466774412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2144776643 - 2¹⁸ = 2144514499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2144776594 and 2144776603.

It is not a weakly prime, because it can be changed into another prime (2144776663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072388321 + 1072388322.

It is an arithmetic number, because the mean of its divisors is an integer number (1072388322).

Almost surely, 2^2144776643 is an apocalyptic number.

2144776643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144776643 is an equidigital number, since it uses as much as digits as its factorization.

2144776643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 44.

The square root of 2144776643 is about 46311.7333188901. The cubic root of 2144776643 is about 1289.6168248804.

The spelling of 2144776643 in words is "two billion, one hundred forty-four million, seven hundred seventy-six thousand, six hundred forty-three".