220999464449 has 32 divisors (see below), whose sum is σ = 238353770016. Its totient is φ = 204172165120.

The previous prime is 220999464407. The next prime is 220999464451. The reversal of 220999464449 is 944464999022.

It can be written as a sum of positive squares in 16 ways, for example, as 159406152049 + 61593312400 = 399257^2 + 248180^2 .

It is a de Polignac number, because none of the positive numbers 2^k-220999464449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220999464391 and 220999464400.

It is not an unprimeable number, because it can be changed into a prime (220999464479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162379529 + ... + 162380889.

It is an arithmetic number, because the mean of its divisors is an integer number (7448555313).

Almost surely, 2^220999464449 is an apocalyptic number.

It is an amenable number.

220999464449 is a deficient number, since it is larger than the sum of its proper divisors (17354305567).

220999464449 is a wasteful number, since it uses less digits than its factorization.

220999464449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245.

The product of its (nonzero) digits is 40310784, while the sum is 62.

The spelling of 220999464449 in words is "two hundred twenty billion, nine hundred ninety-nine million, four hundred sixty-four thousand, four hundred forty-nine".