20320355244 has 24 divisors (see below), whose sum is σ = 54187614208. Its totient is φ = 5805815760.

The previous prime is 20320355207. The next prime is 20320355287. The reversal of 20320355244 is 44255302302.

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, 120954412 + ... + 120954579.

Almost surely, 2^20320355244 is an apocalyptic number.

It is an amenable number.

20320355244 is an abundant number, since it is smaller than the sum of its proper divisors (33867258964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20320355244 is a wasteful number, since it uses less digits than its factorization.

20320355244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241909005 (or 241909003 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 20320355244 its reverse (44255302302), we get a palindrome (64575657546).

The spelling of 20320355244 in words is "twenty billion, three hundred twenty million, three hundred fifty-five thousand, two hundred forty-four".