220449905999 has 8 divisors (see below), whose sum is σ = 221106842400. Its totient is φ = 219793153536.

The previous prime is 220449905953. The next prime is 220449906031. The reversal of 220449905999 is 999509944022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220449905999 - 2²⁸ = 220181470543 is a prime.

It is a super-2 number, since 2×220449905999² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220449902999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2576102 + ... + 2660300.

It is an arithmetic number, because the mean of its divisors is an integer number (27638355300).

Almost surely, 2^220449905999 is an apocalyptic number.

220449905999 is a deficient number, since it is larger than the sum of its proper divisors (656936401).

220449905999 is an equidigital number, since it uses as much as digits as its factorization.

220449905999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91969.

The product of its (nonzero) digits is 18895680, while the sum is 62.

The spelling of 220449905999 in words is "two hundred twenty billion, four hundred forty-nine million, nine hundred five thousand, nine hundred ninety-nine".