20093443578 has 128 divisors (see below), whose sum is σ = 50736000000. Its totient is φ = 5843524032.

The previous prime is 20093443561. The next prime is 20093443583. The reversal of 20093443578 is 87534439002.

20093443578 is a `hidden beast` number, since 2 + 0 + 0 + 9 + 34 + 43 + 578 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6654153 + ... + 6657171.

It is an arithmetic number, because the mean of its divisors is an integer number (396375000).

Almost surely, 2^20093443578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20093443578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25368000000).

20093443578 is an abundant number, since it is smaller than the sum of its proper divisors (30642556422).

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

20093443578 is a wasteful number, since it uses less digits than its factorization.

20093443578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561 (or 3555 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 20093443578 in words is "twenty billion, ninety-three million, four hundred forty-three thousand, five hundred seventy-eight".