20001883886885 has 4 divisors (see below), whose sum is σ = 24002260664268. Its totient is φ = 16001507109504.

The previous prime is 20001883886821. The next prime is 20001883886909. The reversal of 20001883886885 is 58868838810002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13437635084644 + 6564248802241 = 3665738^2 + 2562079^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001883886885 - 2⁶ = 20001883886821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000188388684 + ... + 2000188388693.

It is an arithmetic number, because the mean of its divisors is an integer number (6000565166067).

Almost surely, 2^{20001883886885} is an apocalyptic number.

It is an amenable number.

20001883886885 is a deficient number, since it is larger than the sum of its proper divisors (4000376777383).

20001883886885 is an equidigital number, since it uses as much as digits as its factorization.

20001883886885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000376777382.

The product of its (nonzero) digits is 47185920, while the sum is 65.

The spelling of 20001883886885 in words is "twenty trillion, one billion, eight hundred eighty-three million, eight hundred eighty-six thousand, eight hundred eighty-five".