20005771473846 has 12 divisors (see below), whose sum is σ = 43345838193372. Its totient is φ = 6668590491276.

The previous prime is 20005771473739. The next prime is 20005771473881. The reversal of 20005771473846 is 64837417750002.

20005771473846 is a `hidden beast` number, since 20 + 0 + 0 + 5 + 7 + 71 + 473 + 84 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20005771473792 and 20005771473801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555715874256 + ... + 555715874291.

It is an arithmetic number, because the mean of its divisors is an integer number (3612153182781).

Almost surely, 2^{20005771473846} is an apocalyptic number.

20005771473846 is an abundant number, since it is smaller than the sum of its proper divisors (23340066719526).

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

20005771473846 is a wasteful number, since it uses less digits than its factorization.

20005771473846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111431748555 (or 1111431748552 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

The spelling of 20005771473846 in words is "twenty trillion, five billion, seven hundred seventy-one million, four hundred seventy-three thousand, eight hundred forty-six".