20009445000 has 80 divisors (see below), whose sum is σ = 62509553040. Its totient is φ = 5335848000.

The previous prime is 20009444951. The next prime is 20009445037. The reversal of 20009445000 is 54490002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 651982 + ... + 681981.

It is an arithmetic number, because the mean of its divisors is an integer number (781369413).

Almost surely, 2^20009445000 is an apocalyptic number.

20009445000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20009445000 is an abundant number, since it is smaller than the sum of its proper divisors (42500108040).

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

20009445000 is a wasteful number, since it uses less digits than its factorization.

20009445000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333992 (or 1333973 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 20009445000 in words is "twenty billion, nine million, four hundred forty-five thousand".