20668296016 has 20 divisors (see below), whose sum is σ = 40246060000. Its totient is φ = 10282216032.

The previous prime is 20668296001. The next prime is 20668296053. The reversal of 20668296016 is 61069286602.

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, 3242466 + ... + 3248833.

It is an arithmetic number, because the mean of its divisors is an integer number (2012303000).

Almost surely, 2^20668296016 is an apocalyptic number.

It is an amenable number.

20668296016 is a deficient number, since it is larger than the sum of its proper divisors (19577763984).

20668296016 is a wasteful number, since it uses less digits than its factorization.

20668296016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491506 (or 6491500 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 20668296016 in words is "twenty billion, six hundred sixty-eight million, two hundred ninety-six thousand, sixteen".