20343784168 has 16 divisors (see below), whose sum is σ = 38501088480. Its totient is φ = 10076827248.

The previous prime is 20343784147. The next prime is 20343784243. The reversal of 20343784168 is 86148734302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11882196 + ... + 11883907.

It is an arithmetic number, because the mean of its divisors is an integer number (2406318030).

Almost surely, 2^20343784168 is an apocalyptic number.

It is an amenable number.

20343784168 is a deficient number, since it is larger than the sum of its proper divisors (18157304312).

20343784168 is a wasteful number, since it uses less digits than its factorization.

20343784168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23766216 (or 23766212 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 20343784168 in words is "twenty billion, three hundred forty-three million, seven hundred eighty-four thousand, one hundred sixty-eight".