20563476236 has 12 divisors (see below), whose sum is σ = 36958680528. Its totient is φ = 10003853232.

The previous prime is 20563476229. The next prime is 20563476253. The reversal of 20563476236 is 63267436502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69471056 + ... + 69471351.

It is an arithmetic number, because the mean of its divisors is an integer number (3079890044).

Almost surely, 2^20563476236 is an apocalyptic number.

It is an amenable number.

20563476236 is a deficient number, since it is larger than the sum of its proper divisors (16395204292).

20563476236 is a wasteful number, since it uses less digits than its factorization.

20563476236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138942448 (or 138942446 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 44.

The spelling of 20563476236 in words is "twenty billion, five hundred sixty-three million, four hundred seventy-six thousand, two hundred thirty-six".