20636720284 has 12 divisors (see below), whose sum is σ = 37684445904. Its totient is φ = 9869735744.

The previous prime is 20636720239. The next prime is 20636720323. The reversal of 20636720284 is 48202763602.

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, 112155997 + ... + 112156180.

It is an arithmetic number, because the mean of its divisors is an integer number (3140370492).

Almost surely, 2^20636720284 is an apocalyptic number.

It is an amenable number.

20636720284 is a deficient number, since it is larger than the sum of its proper divisors (17047725620).

20636720284 is a wasteful number, since it uses less digits than its factorization.

20636720284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224312204 (or 224312202 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 20636720284 in words is "twenty billion, six hundred thirty-six million, seven hundred twenty thousand, two hundred eighty-four".