2660513887 has 2 divisors, whose sum is σ = 2660513888. Its totient is φ = 2660513886.

The previous prime is 2660513881. The next prime is 2660513909. The reversal of 2660513887 is 7883150662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2660513887 - 2¹⁵ = 2660481119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660513881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330256943 + 1330256944.

It is an arithmetic number, because the mean of its divisors is an integer number (1330256944).

Almost surely, 2^2660513887 is an apocalyptic number.

2660513887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660513887 is an equidigital number, since it uses as much as digits as its factorization.

2660513887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2660513887 is about 51580.1695130987. The cubic root of 2660513887 is about 1385.6552025991.

The spelling of 2660513887 in words is "two billion, six hundred sixty million, five hundred thirteen thousand, eight hundred eighty-seven".