220320312005 has 16 divisors (see below), whose sum is σ = 278397094080. Its totient is φ = 166920953472.

The previous prime is 220320311989. The next prime is 220320312101. The reversal of 220320312005 is 500213023022.

It is a cyclic number.

It is not a de Polignac number, because 220320312005 - 2⁴ = 220320311989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134459 + ... + 677288.

It is an arithmetic number, because the mean of its divisors is an integer number (17399818380).

Almost surely, 2^220320312005 is an apocalyptic number.

It is an amenable number.

220320312005 is a deficient number, since it is larger than the sum of its proper divisors (58076782075).

220320312005 is a wasteful number, since it uses less digits than its factorization.

220320312005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814628.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 220320312005 its reverse (500213023022), we get a palindrome (720533335027).

The spelling of 220320312005 in words is "two hundred twenty billion, three hundred twenty million, three hundred twelve thousand, five".