220318878238 has 32 divisors (see below), whose sum is σ = 354560405760. Its totient is φ = 102312862080.

The previous prime is 220318878211. The next prime is 220318878281. The reversal of 220318878238 is 832878813022.

It is a super-4 number, since 4×220318878238⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659095 + ... + 935437.

It is an arithmetic number, because the mean of its divisors is an integer number (11080012680).

Almost surely, 2^220318878238 is an apocalyptic number.

220318878238 is a deficient number, since it is larger than the sum of its proper divisors (134241527522).

220318878238 is a wasteful number, since it uses less digits than its factorization.

220318878238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276672.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 220318878238 in words is "two hundred twenty billion, three hundred eighteen million, eight hundred seventy-eight thousand, two hundred thirty-eight".