20185743775016 has 64 divisors (see below), whose sum is σ = 41855326084800. Its totient is φ = 9085787476992.

The previous prime is 20185743775013. The next prime is 20185743775037. The reversal of 20185743775016 is 61057734758102.

It is not an unprimeable number, because it can be changed into a prime (20185743775013) 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, 33698666 + ... + 34292441.

It is an arithmetic number, because the mean of its divisors is an integer number (653989470075).

Almost surely, 2^{20185743775016} is an apocalyptic number.

It is an amenable number.

20185743775016 is an abundant number, since it is smaller than the sum of its proper divisors (21669582309784).

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

20185743775016 is a wasteful number, since it uses less digits than its factorization.

20185743775016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67991226 (or 67991222 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 56.

The spelling of 20185743775016 in words is "twenty trillion, one hundred eighty-five billion, seven hundred forty-three million, seven hundred seventy-five thousand, sixteen".