220267428991 has 4 divisors (see below), whose sum is σ = 220268413152. Its totient is φ = 220266444832.

The previous prime is 220267428977. The next prime is 220267429033. The reversal of 220267428991 is 199824762022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 220267428991 - 2³⁷ = 82828475519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220267428971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24186 + ... + 664168.

It is an arithmetic number, because the mean of its divisors is an integer number (55067103288).

Almost surely, 2^220267428991 is an apocalyptic number.

220267428991 is a deficient number, since it is larger than the sum of its proper divisors (984161).

220267428991 is an equidigital number, since it uses as much as digits as its factorization.

220267428991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984160.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 220267428991 in words is "two hundred twenty billion, two hundred sixty-seven million, four hundred twenty-eight thousand, nine hundred ninety-one".