2663312653 has 2 divisors, whose sum is σ = 2663312654. Its totient is φ = 2663312652.

The previous prime is 2663312647. The next prime is 2663312681. The reversal of 2663312653 is 3562133662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1953463204 + 709849449 = 44198^2 + 26643^2 .

It is a cyclic number.

It is not a de Polignac number, because 2663312653 - 2²⁵ = 2629758221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2663312693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331656326 + 1331656327.

It is an arithmetic number, because the mean of its divisors is an integer number (1331656327).

Almost surely, 2^2663312653 is an apocalyptic number.

It is an amenable number.

2663312653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663312653 is an equidigital number, since it uses as much as digits as its factorization.

2663312653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 37.

The square root of 2663312653 is about 51607.2926338904. The cubic root of 2663312653 is about 1386.1409189863.

The spelling of 2663312653 in words is "two billion, six hundred sixty-three million, three hundred twelve thousand, six hundred fifty-three".