220865230679 has 4 divisors (see below), whose sum is σ = 220868198760. Its totient is φ = 220862262600.

The previous prime is 220865230667. The next prime is 220865230709. The reversal of 220865230679 is 976032568022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220865230679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220865230279) 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, 1369472 + ... + 1522229.

It is an arithmetic number, because the mean of its divisors is an integer number (55217049690).

Almost surely, 2^220865230679 is an apocalyptic number.

220865230679 is a deficient number, since it is larger than the sum of its proper divisors (2968081).

220865230679 is an equidigital number, since it uses as much as digits as its factorization.

220865230679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968080.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 220865230679 in words is "two hundred twenty billion, eight hundred sixty-five million, two hundred thirty thousand, six hundred seventy-nine".