20669675696 has 20 divisors (see below), whose sum is σ = 41788692912. Its totient is φ = 9885496896.

The previous prime is 20669675659. The next prime is 20669675701. The reversal of 20669675696 is 69657696602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28083431 + ... + 28084166.

Almost surely, 2^20669675696 is an apocalyptic number.

It is an amenable number.

20669675696 is an abundant number, since it is smaller than the sum of its proper divisors (21119017216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20669675696 is a wasteful number, since it uses less digits than its factorization.

20669675696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56167628 (or 56167622 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 62.

The spelling of 20669675696 in words is "twenty billion, six hundred sixty-nine million, six hundred seventy-five thousand, six hundred ninety-six".