20194854506 has 16 divisors (see below), whose sum is σ = 32373945216. Its totient is φ = 9414641856.

The previous prime is 20194854503. The next prime is 20194854587. The reversal of 20194854506 is 60545849102.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20194854503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771906 + ... + 2779181.

It is an arithmetic number, because the mean of its divisors is an integer number (2023371576).

Almost surely, 2^20194854506 is an apocalyptic number.

20194854506 is a deficient number, since it is larger than the sum of its proper divisors (12179090710).

20194854506 is a wasteful number, since it uses less digits than its factorization.

20194854506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551213.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 20194854506 in words is "twenty billion, one hundred ninety-four million, eight hundred fifty-four thousand, five hundred six".