20430675444 has 48 divisors (see below), whose sum is σ = 48174388416. Its totient is φ = 6738547200.

The previous prime is 20430675443. The next prime is 20430675449. The reversal of 20430675444 is 44457603402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430675443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122174 + ... + 1140234.

It is an arithmetic number, because the mean of its divisors is an integer number (1003633092).

Almost surely, 2^20430675444 is an apocalyptic number.

It is an amenable number.

20430675444 is an abundant number, since it is smaller than the sum of its proper divisors (27743712972).

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

20430675444 is a wasteful number, since it uses less digits than its factorization.

20430675444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19056 (or 19054 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 39.

The spelling of 20430675444 in words is "twenty billion, four hundred thirty million, six hundred seventy-five thousand, four hundred forty-four".