2663555249 has 2 divisors, whose sum is σ = 2663555250. Its totient is φ = 2663555248.

The previous prime is 2663555239. The next prime is 2663555267. The reversal of 2663555249 is 9425553662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2506504225 + 157051024 = 50065^2 + 12532^2 .

It is a cyclic number.

It is not a de Polignac number, because 2663555249 - 2²⁰ = 2662506673 is a prime.

It is a super-3 number, since 3×2663555249³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2663555239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331777624 + 1331777625.

It is an arithmetic number, because the mean of its divisors is an integer number (1331777625).

Almost surely, 2^2663555249 is an apocalyptic number.

It is an amenable number.

2663555249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663555249 is an equidigital number, since it uses as much as digits as its factorization.

2663555249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944000, while the sum is 47.

The square root of 2663555249 is about 51609.6429846206. The cubic root of 2663555249 is about 1386.1830046739.

The spelling of 2663555249 in words is "two billion, six hundred sixty-three million, five hundred fifty-five thousand, two hundred forty-nine".