2142644663 has 2 divisors, whose sum is σ = 2142644664. Its totient is φ = 2142644662.

The previous prime is 2142644659. The next prime is 2142644677. The reversal of 2142644663 is 3664462412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2142644663 - 2² = 2142644659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142644633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071322331 + 1071322332.

It is an arithmetic number, because the mean of its divisors is an integer number (1071322332).

Almost surely, 2^2142644663 is an apocalyptic number.

2142644663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142644663 is an equidigital number, since it uses as much as digits as its factorization.

2142644663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 38.

The square root of 2142644663 is about 46288.7098869692. The cubic root of 2142644663 is about 1289.1893757407.

The spelling of 2142644663 in words is "two billion, one hundred forty-two million, six hundred forty-four thousand, six hundred sixty-three".