2220663255779 has 2 divisors, whose sum is σ = 2220663255780. Its totient is φ = 2220663255778.

The previous prime is 2220663255761. The next prime is 2220663255787. The reversal of 2220663255779 is 9775523660222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2220663255779 - 2⁸ = 2220663255523 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220663255709) 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, 1110331627889 + 1110331627890.

It is an arithmetic number, because the mean of its divisors is an integer number (1110331627890).

Almost surely, 2^{2220663255779} is an apocalyptic number.

2220663255779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220663255779 is an equidigital number, since it uses as much as digits as its factorization.

2220663255779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 56.

The spelling of 2220663255779 in words is "two trillion, two hundred twenty billion, six hundred sixty-three million, two hundred fifty-five thousand, seven hundred seventy-nine".