2660510553563 has 2 divisors, whose sum is σ = 2660510553564. Its totient is φ = 2660510553562.

The previous prime is 2660510553529. The next prime is 2660510553653. The reversal of 2660510553563 is 3653550150662.

Together with next prime (2660510553653) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660510553563 is a prime.

It is not a weakly prime, because it can be changed into another prime (2660510550563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330255276781 + 1330255276782.

It is an arithmetic number, because the mean of its divisors is an integer number (1330255276782).

Almost surely, 2^{2660510553563} is an apocalyptic number.

2660510553563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660510553563 is an equidigital number, since it uses as much as digits as its factorization.

2660510553563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430000, while the sum is 47.

The spelling of 2660510553563 in words is "two trillion, six hundred sixty billion, five hundred ten million, five hundred fifty-three thousand, five hundred sixty-three".