20527784456 has 16 divisors (see below), whose sum is σ = 38519614800. Its totient is φ = 10255887184.

The previous prime is 20527784449. The next prime is 20527784561. The reversal of 20527784456 is 65448772502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989726 + ... + 1010253.

It is an arithmetic number, because the mean of its divisors is an integer number (2407475925).

Almost surely, 2^20527784456 is an apocalyptic number.

It is an amenable number.

20527784456 is a deficient number, since it is larger than the sum of its proper divisors (17991830344).

20527784456 is a wasteful number, since it uses less digits than its factorization.

20527784456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001268 (or 2001264 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 50.

The spelling of 20527784456 in words is "twenty billion, five hundred twenty-seven million, seven hundred eighty-four thousand, four hundred fifty-six".