20128173594 has 8 divisors (see below), whose sum is σ = 40256347200. Its totient is φ = 6709391196.

The previous prime is 20128173577. The next prime is 20128173601. The reversal of 20128173594 is 49537182102.

It is a sphenic number, since it is the product of 3 distinct primes.

20128173594 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677347794 + ... + 1677347805.

It is an arithmetic number, because the mean of its divisors is an integer number (5032043400).

Almost surely, 2^20128173594 is an apocalyptic number.

20128173594 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20128173594 is a wasteful number, since it uses less digits than its factorization.

20128173594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354695604.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 20128173594 in words is "twenty billion, one hundred twenty-eight million, one hundred seventy-three thousand, five hundred ninety-four".