2665061263 has 2 divisors, whose sum is σ = 2665061264. Its totient is φ = 2665061262.

The previous prime is 2665061261. The next prime is 2665061291. The reversal of 2665061263 is 3621605662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2665061263 - 2¹ = 2665061261 is a prime.

Together with 2665061261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2665061261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332530631 + 1332530632.

It is an arithmetic number, because the mean of its divisors is an integer number (1332530632).

Almost surely, 2^2665061263 is an apocalyptic number.

2665061263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665061263 is an equidigital number, since it uses as much as digits as its factorization.

2665061263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 2665061263 is about 51624.2313550526. The cubic root of 2665061263 is about 1386.4442116553. Note that the first 3 decimals are identical.

The spelling of 2665061263 in words is "two billion, six hundred sixty-five million, sixty-one thousand, two hundred sixty-three".