20318604448 has 48 divisors (see below), whose sum is σ = 40342385664. Its totient is φ = 10073271040.

The previous prime is 20318604421. The next prime is 20318604461. The reversal of 20318604448 is 84440681302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20318604448.

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, 1932261 + ... + 1942747.

It is an arithmetic number, because the mean of its divisors is an integer number (840466368).

Almost surely, 2^20318604448 is an apocalyptic number.

It is an amenable number.

20318604448 is a deficient number, since it is larger than the sum of its proper divisors (20023781216).

20318604448 is a wasteful number, since it uses less digits than its factorization.

20318604448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11005 (or 10997 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 20318604448 in words is "twenty billion, three hundred eighteen million, six hundred four thousand, four hundred forty-eight".