20268808684 has 6 divisors (see below), whose sum is σ = 35470415204. Its totient is φ = 10134404340.

The previous prime is 20268808669. The next prime is 20268808691. The reversal of 20268808684 is 48680886202.

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 as a sum of consecutive naturals, namely, 2533601082 + ... + 2533601089.

Almost surely, 2^20268808684 is an apocalyptic number.

It is an amenable number.

20268808684 is a deficient number, since it is larger than the sum of its proper divisors (15201606520).

20268808684 is a wasteful number, since it uses less digits than its factorization.

20268808684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5067202175 (or 5067202173 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 52.

The spelling of 20268808684 in words is "twenty billion, two hundred sixty-eight million, eight hundred eight thousand, six hundred eighty-four".