220716780554243 has 4 divisors (see below), whose sum is σ = 221015450082120. Its totient is φ = 220418111026368.

The previous prime is 220716780554233. The next prime is 220716780554323. The reversal of 220716780554243 is 342455087617022.

It is a happy number.

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 220716780554243 - 2²⁸ = 220716512118787 is a prime.

It is a super-3 number, since 3×220716780554243³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220716780554233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149334762830 + ... + 149334764307.

It is an arithmetic number, because the mean of its divisors is an integer number (55253862520530).

Almost surely, 2^{220716780554243} is an apocalyptic number.

220716780554243 is a deficient number, since it is larger than the sum of its proper divisors (298669527877).

220716780554243 is an equidigital number, since it uses as much as digits as its factorization.

220716780554243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298669527876.

The product of its (nonzero) digits is 22579200, while the sum is 56.

The spelling of 220716780554243 in words is "two hundred twenty trillion, seven hundred sixteen billion, seven hundred eighty million, five hundred fifty-four thousand, two hundred forty-three".