20168484177912 has 32 divisors (see below), whose sum is σ = 57624240508800. Its totient is φ = 5762424050784.

The previous prime is 20168484177889. The next prime is 20168484177967. The reversal of 20168484177912 is 21977148486102.

It is a happy number.

It is a congruent number.

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, 60025250362 + ... + 60025250697.

It is an arithmetic number, because the mean of its divisors is an integer number (1800757515900).

Almost surely, 2^{20168484177912} is an apocalyptic number.

It is an amenable number.

20168484177912 is an abundant number, since it is smaller than the sum of its proper divisors (37455756330888).

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

20168484177912 is a wasteful number, since it uses less digits than its factorization.

20168484177912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120050501075 (or 120050501071 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 20168484177912 in words is "twenty trillion, one hundred sixty-eight billion, four hundred eighty-four million, one hundred seventy-seven thousand, nine hundred twelve".