6556011662663 has 2 divisors, whose sum is σ = 6556011662664. Its totient is φ = 6556011662662.

The previous prime is 6556011662617. The next prime is 6556011662821. The reversal of 6556011662663 is 3662661106556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6556011662663 - 2³⁴ = 6538831793479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6556011662063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278005831331 + 3278005831332.

It is an arithmetic number, because the mean of its divisors is an integer number (3278005831332).

Almost surely, 2^{6556011662663} is an apocalyptic number.

6556011662663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6556011662663 is an equidigital number, since it uses as much as digits as its factorization.

6556011662663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 53.

The spelling of 6556011662663 in words is "six trillion, five hundred fifty-six billion, eleven million, six hundred sixty-two thousand, six hundred sixty-three".