220769493128 has 36 divisors (see below), whose sum is σ = 416119553415. Its totient is φ = 109807309968.

The previous prime is 220769493067. The next prime is 220769493169. The reversal of 220769493128 is 821394967022.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 110384746564 + 110384746564 = 332242^2 + 332242^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332242.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220769493128.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 376097651 + ... + 376098237.

Almost surely, 2^220769493128 is an apocalyptic number.

It is an amenable number.

220769493128 is a deficient number, since it is larger than the sum of its proper divisors (195350060287).

220769493128 is an frugal number, since it uses more digits than its factorization.

220769493128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 220769493128 in words is "two hundred twenty billion, seven hundred sixty-nine million, four hundred ninety-three thousand, one hundred twenty-eight".