2681565287 has 2 divisors, whose sum is σ = 2681565288. Its totient is φ = 2681565286.

The previous prime is 2681565241. The next prime is 2681565311. The reversal of 2681565287 is 7825651862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2681565287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2681565587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340782643 + 1340782644.

It is an arithmetic number, because the mean of its divisors is an integer number (1340782644).

Almost surely, 2^2681565287 is an apocalyptic number.

2681565287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681565287 is an equidigital number, since it uses as much as digits as its factorization.

2681565287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 50.

The square root of 2681565287 is about 51783.8322934871. The cubic root of 2681565287 is about 1389.3002856494.

The spelling of 2681565287 in words is "two billion, six hundred eighty-one million, five hundred sixty-five thousand, two hundred eighty-seven".