223795781439 has 4 divisors (see below), whose sum is σ = 298394375256. Its totient is φ = 149197187624.

The previous prime is 223795781423. The next prime is 223795781519. The reversal of 223795781439 is 934187597322.

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 223795781439 - 2⁴ = 223795781423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223795782439) 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, 37299296904 + ... + 37299296909.

It is an arithmetic number, because the mean of its divisors is an integer number (74598593814).

Almost surely, 2^223795781439 is an apocalyptic number.

223795781439 is a deficient number, since it is larger than the sum of its proper divisors (74598593817).

223795781439 is an equidigital number, since it uses as much as digits as its factorization.

223795781439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74598593816.

The product of its digits is 22861440, while the sum is 60.

The spelling of 223795781439 in words is "two hundred twenty-three billion, seven hundred ninety-five million, seven hundred eighty-one thousand, four hundred thirty-nine".