20206797768 has 48 divisors (see below), whose sum is σ = 57607102800. Its totient is φ = 6381093600.

The previous prime is 20206797761. The next prime is 20206797773. The reversal of 20206797768 is 86779760202.

It is not an unprimeable number, because it can be changed into a prime (20206797761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7384158 + ... + 7386893.

It is an arithmetic number, because the mean of its divisors is an integer number (1200147975).

Almost surely, 2^20206797768 is an apocalyptic number.

It is an amenable number.

20206797768 is an abundant number, since it is smaller than the sum of its proper divisors (37400305032).

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

20206797768 is a wasteful number, since it uses less digits than its factorization.

20206797768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771082 (or 14771075 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 20206797768 in words is "twenty billion, two hundred six million, seven hundred ninety-seven thousand, seven hundred sixty-eight".