20168067391264 has 48 divisors (see below), whose sum is σ = 42790231919232. Its totient is φ = 9301797174528.

The previous prime is 20168067391237. The next prime is 20168067391291. The reversal of 20168067391264 is 46219376086102.

It is an interprime number because it is at equal distance from previous prime (20168067391237) and next prime (20168067391291).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16442794 + ... + 17626729.

It is an arithmetic number, because the mean of its divisors is an integer number (891463164984).

Almost surely, 2^{20168067391264} is an apocalyptic number.

It is an amenable number.

20168067391264 is an abundant number, since it is smaller than the sum of its proper divisors (22622164527968).

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

20168067391264 is a wasteful number, since it uses less digits than its factorization.

20168067391264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34070969 (or 34070961 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 20168067391264 in words is "twenty trillion, one hundred sixty-eight billion, sixty-seven million, three hundred ninety-one thousand, two hundred sixty-four".