220272186979 has 4 divisors (see below), whose sum is σ = 237216201376. Its totient is φ = 203328172584.

The previous prime is 220272186971. The next prime is 220272186991. The reversal of 220272186979 is 979681272022.

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 220272186979 - 2³ = 220272186971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220272186971) 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, 8472007179 + ... + 8472007204.

It is an arithmetic number, because the mean of its divisors is an integer number (59304050344).

Almost surely, 2^220272186979 is an apocalyptic number.

220272186979 is a deficient number, since it is larger than the sum of its proper divisors (16944014397).

220272186979 is a wasteful number, since it uses less digits than its factorization.

220272186979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16944014396.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 220272186979 in words is "two hundred twenty billion, two hundred seventy-two million, one hundred eighty-six thousand, nine hundred seventy-nine".