20119804566 has 32 divisors (see below), whose sum is σ = 40572653568. Its totient is φ = 6651136800.

The previous prime is 20119804547. The next prime is 20119804571. The reversal of 20119804566 is 66540891102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3115641 + ... + 3122091.

It is an arithmetic number, because the mean of its divisors is an integer number (1267895424).

Almost surely, 2^20119804566 is an apocalyptic number.

20119804566 is an abundant number, since it is smaller than the sum of its proper divisors (20452849002).

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

20119804566 is a wasteful number, since it uses less digits than its factorization.

20119804566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10676.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 20119804566 in words is "twenty billion, one hundred nineteen million, eight hundred four thousand, five hundred sixty-six".