220754975779 has 8 divisors (see below), whose sum is σ = 238347280080. Its totient is φ = 203249978976.

The previous prime is 220754975773. The next prime is 220754975801. The reversal of 220754975779 is 977579457022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220754975779 - 2¹⁷ = 220754844707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220754975779.

It is not an unprimeable number, because it can be changed into a prime (220754975773) 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 in 7 ways as a sum of consecutive naturals, for example, 21821617 + ... + 21831730.

It is an arithmetic number, because the mean of its divisors is an integer number (29793410010).

Almost surely, 2^220754975779 is an apocalyptic number.

220754975779 is a deficient number, since it is larger than the sum of its proper divisors (17592304301).

220754975779 is a wasteful number, since it uses less digits than its factorization.

220754975779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43653749.

The product of its (nonzero) digits is 77792400, while the sum is 64.

The spelling of 220754975779 in words is "two hundred twenty billion, seven hundred fifty-four million, nine hundred seventy-five thousand, seven hundred seventy-nine".