20080687668 has 48 divisors (see below), whose sum is σ = 47467047936. Its totient is φ = 6606280800.

The previous prime is 20080687639. The next prime is 20080687687. The reversal of 20080687668 is 86678608002.

It is a self number, because there is not a number n which added to its sum of digits gives 20080687668.

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 15 ways as a sum of consecutive naturals, for example, 1037205 + ... + 1056387.

It is an arithmetic number, because the mean of its divisors is an integer number (988896832).

Almost surely, 2^20080687668 is an apocalyptic number.

It is an amenable number.

20080687668 is an abundant number, since it is smaller than the sum of its proper divisors (27386360268).

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

20080687668 is a wasteful number, since it uses less digits than its factorization.

20080687668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20324 (or 20322 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 20080687668 in words is "twenty billion, eighty million, six hundred eighty-seven thousand, six hundred sixty-eight".