20881846406 has 8 divisors (see below), whose sum is σ = 31913765424. Its totient is φ = 10243924600.

The previous prime is 20881846373. The next prime is 20881846463. The reversal of 20881846406 is 60464818802.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 98499170 + ... + 98499381.

It is an arithmetic number, because the mean of its divisors is an integer number (3989220678).

Almost surely, 2^20881846406 is an apocalyptic number.

20881846406 is a deficient number, since it is larger than the sum of its proper divisors (11031919018).

20881846406 is a wasteful number, since it uses less digits than its factorization.

20881846406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196998606.

The product of its (nonzero) digits is 589824, while the sum is 47.

The spelling of 20881846406 in words is "twenty billion, eight hundred eighty-one million, eight hundred forty-six thousand, four hundred six".