20884383805858 has 32 divisors (see below), whose sum is σ = 32122737803520. Its totient is φ = 10178610624000.

The previous prime is 20884383805777. The next prime is 20884383805907. The reversal of 20884383805858 is 85850838348802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618358260 + ... + 618392032.

It is an arithmetic number, because the mean of its divisors is an integer number (1003835556360).

Almost surely, 2^{20884383805858} is an apocalyptic number.

20884383805858 is a deficient number, since it is larger than the sum of its proper divisors (11238353997662).

20884383805858 is a wasteful number, since it uses less digits than its factorization.

20884383805858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60282.

The product of its (nonzero) digits is 471859200, while the sum is 70.

The spelling of 20884383805858 in words is "twenty trillion, eight hundred eighty-four billion, three hundred eighty-three million, eight hundred five thousand, eight hundred fifty-eight".