20980322450 has 12 divisors (see below), whose sum is σ = 39023399850. Its totient is φ = 8392128960.

The previous prime is 20980322431. The next prime is 20980322477. The reversal of 20980322450 is 5422308902.

It can be written as a sum of positive squares in 3 ways, for example, as 16802122129 + 4178200321 = 129623^2 + 64639^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20980322450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209803175 + ... + 209803274.

Almost surely, 2^20980322450 is an apocalyptic number.

20980322450 is a deficient number, since it is larger than the sum of its proper divisors (18043077400).

20980322450 is a wasteful number, since it uses less digits than its factorization.

20980322450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419606461 (or 419606456 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 20980322450 in words is "twenty billion, nine hundred eighty million, three hundred twenty-two thousand, four hundred fifty".