20168445068 has 24 divisors (see below), whose sum is σ = 37453570560. Its totient is φ = 9482287760.

The previous prime is 20168445061. The next prime is 20168445113. The reversal of 20168445068 is 86054486102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20168445061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1852388 + ... + 1863243.

It is an arithmetic number, because the mean of its divisors is an integer number (1560565440).

Almost surely, 2^20168445068 is an apocalyptic number.

It is an amenable number.

20168445068 is a deficient number, since it is larger than the sum of its proper divisors (17285125492).

20168445068 is a wasteful number, since it uses less digits than its factorization.

20168445068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715717 (or 3715715 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 20168445068 in words is "twenty billion, one hundred sixty-eight million, four hundred forty-five thousand, sixty-eight".