220645496447 has 2 divisors, whose sum is σ = 220645496448. Its totient is φ = 220645496446.

The previous prime is 220645496441. The next prime is 220645496483. The reversal of 220645496447 is 744694546022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220645496447 - 2¹² = 220645492351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220645496441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110322748223 + 110322748224.

It is an arithmetic number, because the mean of its divisors is an integer number (110322748224).

Almost surely, 2^220645496447 is an apocalyptic number.

220645496447 is a deficient number, since it is larger than the sum of its proper divisors (1).

220645496447 is an equidigital number, since it uses as much as digits as its factorization.

220645496447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 220645496447 in words is "two hundred twenty billion, six hundred forty-five million, four hundred ninety-six thousand, four hundred forty-seven".