20163926886 has 16 divisors (see below), whose sum is σ = 40635701568. Its totient is φ = 6670001000.

The previous prime is 20163926771. The next prime is 20163926897. The reversal of 20163926886 is 68862936102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12826140 + ... + 12827711.

It is an arithmetic number, because the mean of its divisors is an integer number (2539731348).

Almost surely, 2^20163926886 is an apocalyptic number.

20163926886 is an abundant number, since it is smaller than the sum of its proper divisors (20471774682).

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

20163926886 is a wasteful number, since it uses less digits than its factorization.

20163926886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25653987.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 20163926886 in words is "twenty billion, one hundred sixty-three million, nine hundred twenty-six thousand, eight hundred eighty-six".