20212782635816 has 32 divisors (see below), whose sum is σ = 37942353253440. Its totient is φ = 10094826069888.

The previous prime is 20212782635777. The next prime is 20212782635869. The reversal of 20212782635816 is 61853628721202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37707611 + ... + 38239893.

It is an arithmetic number, because the mean of its divisors is an integer number (1185698539170).

Almost surely, 2^{20212782635816} is an apocalyptic number.

It is an amenable number.

20212782635816 is a deficient number, since it is larger than the sum of its proper divisors (17729570617624).

20212782635816 is a wasteful number, since it uses less digits than its factorization.

20212782635816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537713 (or 537709 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 20212782635816 in words is "twenty trillion, two hundred twelve billion, seven hundred eighty-two million, six hundred thirty-five thousand, eight hundred sixteen".