20205746473 has 8 divisors (see below), whose sum is σ = 22139739360. Its totient is φ = 18287938080.

The previous prime is 20205746471. The next prime is 20205746501. The reversal of 20205746473 is 37464750202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20205746473 - 2¹ = 20205746471 is a prime.

It is a super-3 number, since 3×20205746473³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20205746471) 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, 4043508 + ... + 4048501.

It is an arithmetic number, because the mean of its divisors is an integer number (2767467420).

Almost surely, 2^20205746473 is an apocalyptic number.

It is an amenable number.

20205746473 is a deficient number, since it is larger than the sum of its proper divisors (1933992887).

20205746473 is a wasteful number, since it uses less digits than its factorization.

20205746473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8092247.

The product of its (nonzero) digits is 282240, while the sum is 40.

The spelling of 20205746473 in words is "twenty billion, two hundred five million, seven hundred forty-six thousand, four hundred seventy-three".