220389904851 has 4 divisors (see below), whose sum is σ = 293853206472. Its totient is φ = 146926603232.

The previous prime is 220389904783. The next prime is 220389904877. The reversal of 220389904851 is 158409983022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220389904851 - 2¹⁵ = 220389872083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220389904794 and 220389904803.

It is not an unprimeable number, because it can be changed into a prime (220389704851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36731650806 + ... + 36731650811.

It is an arithmetic number, because the mean of its divisors is an integer number (73463301618).

Almost surely, 2^220389904851 is an apocalyptic number.

220389904851 is a deficient number, since it is larger than the sum of its proper divisors (73463301621).

220389904851 is an equidigital number, since it uses as much as digits as its factorization.

220389904851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73463301620.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 220389904851 in words is "two hundred twenty billion, three hundred eighty-nine million, nine hundred four thousand, eight hundred fifty-one".