20309868966 has 8 divisors (see below), whose sum is σ = 40619737944. Its totient is φ = 6769956320.

The previous prime is 20309868947. The next prime is 20309868967. The reversal of 20309868966 is 66986890302.

It is a sphenic number, since it is the product of 3 distinct primes.

20309868966 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20309868967) by changing a digit.

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, 1692489075 + ... + 1692489086.

It is an arithmetic number, because the mean of its divisors is an integer number (5077467243).

Almost surely, 2^20309868966 is an apocalyptic number.

20309868966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20309868966 is a wasteful number, since it uses less digits than its factorization.

20309868966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384978166.

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 20309868966 in words is "twenty billion, three hundred nine million, eight hundred sixty-eight thousand, nine hundred sixty-six".