20636367608 has 16 divisors (see below), whose sum is σ = 38776051080. Its totient is φ = 10296087328.

The previous prime is 20636367553. The next prime is 20636367617. The reversal of 20636367608 is 80676363602.

It is a congruent number.

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, 2758091 + ... + 2765562.

Almost surely, 2^20636367608 is an apocalyptic number.

It is an amenable number.

20636367608 is a deficient number, since it is larger than the sum of its proper divisors (18139683472).

20636367608 is a wasteful number, since it uses less digits than its factorization.

20636367608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524126 (or 5524122 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 20636367608 in words is "twenty billion, six hundred thirty-six million, three hundred sixty-seven thousand, six hundred eight".