20681084953910 has 32 divisors (see below), whose sum is σ = 37239049216512. Its totient is φ = 8269524113760.

The previous prime is 20681084953909. The next prime is 20681084953933. The reversal of 20681084953910 is 1935948018602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650926325 + ... + 650958095.

It is an arithmetic number, because the mean of its divisors is an integer number (1163720288016).

Almost surely, 2^{20681084953910} is an apocalyptic number.

20681084953910 is a deficient number, since it is larger than the sum of its proper divisors (16557964262602).

20681084953910 is a wasteful number, since it uses less digits than its factorization.

20681084953910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52628.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 20681084953910 in words is "twenty trillion, six hundred eighty-one billion, eighty-four million, nine hundred fifty-three thousand, nine hundred ten".