20821862676116 has 12 divisors (see below), whose sum is σ = 36463581624960. Its totient is φ = 10403696497560.

The previous prime is 20821862676101. The next prime is 20821862676133. The reversal of 20821862676116 is 61167626812802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808703650 + ... + 1808715161.

It is an arithmetic number, because the mean of its divisors is an integer number (3038631802080).

Almost surely, 2^{20821862676116} is an apocalyptic number.

It is an amenable number.

20821862676116 is a deficient number, since it is larger than the sum of its proper divisors (15641718948844).

20821862676116 is a wasteful number, since it uses less digits than its factorization.

20821862676116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617420254 (or 3617420252 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 20821862676116 in words is "twenty trillion, eight hundred twenty-one billion, eight hundred sixty-two million, six hundred seventy-six thousand, one hundred sixteen".