20345884322 has 16 divisors (see below), whose sum is σ = 31597336440. Its totient is φ = 9814019712.

The previous prime is 20345884309. The next prime is 20345884367. The reversal of 20345884322 is 22348854302.

It is a Cunningham number, because it is equal to 142639²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 14648502961 + 5697381361 = 121031^2 + 75481^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20345884322.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74243 + ... + 214950.

Almost surely, 2^20345884322 is an apocalyptic number.

20345884322 is a deficient number, since it is larger than the sum of its proper divisors (11251452118).

20345884322 is a wasteful number, since it uses less digits than its factorization.

20345884322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290437.

The product of its (nonzero) digits is 368640, while the sum is 41.

The spelling of 20345884322 in words is "twenty billion, three hundred forty-five million, eight hundred eighty-four thousand, three hundred twenty-two".