20173073478 has 8 divisors (see below), whose sum is σ = 40346146968. Its totient is φ = 6724357824.

The previous prime is 20173073447. The next prime is 20173073491. The reversal of 20173073478 is 87437037102.

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

20173073478 is an admirable number.

It is a congruent 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, 1681089451 + ... + 1681089462.

It is an arithmetic number, because the mean of its divisors is an integer number (5043268371).

Almost surely, 2^20173073478 is an apocalyptic number.

20173073478 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.

20173073478 is a wasteful number, since it uses less digits than its factorization.

20173073478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362178918.

The product of its (nonzero) digits is 197568, while the sum is 42.

The spelling of 20173073478 in words is "twenty billion, one hundred seventy-three million, seventy-three thousand, four hundred seventy-eight".