20412805568 has 28 divisors (see below), whose sum is σ = 40755189000. Its totient is φ = 10143781632.

The previous prime is 20412805559. The next prime is 20412805619. The reversal of 20412805568 is 86550821402.

It is a happy number.

It is a congruent number.

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, 967943 + ... + 988806.

Almost surely, 2^20412805568 is an apocalyptic number.

It is an amenable number.

20412805568 is a deficient number, since it is larger than the sum of its proper divisors (20342383432).

20412805568 is a wasteful number, since it uses less digits than its factorization.

20412805568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956924 (or 1956914 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 20412805568 in words is "twenty billion, four hundred twelve million, eight hundred five thousand, five hundred sixty-eight".