20874083859 has 10 divisors (see below), whose sum is σ = 31182273540. Its totient is φ = 13916055852.

The previous prime is 20874083831. The next prime is 20874083861. The reversal of 20874083859 is 95838047802.

It is a happy number.

It is not a de Polignac number, because 20874083859 - 2²⁰ = 20873035283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20874083899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 128852289 + ... + 128852450.

It is an arithmetic number, because the mean of its divisors is an integer number (3118227354).

Almost surely, 2^20874083859 is an apocalyptic number.

20874083859 is a deficient number, since it is larger than the sum of its proper divisors (10308189681).

20874083859 is an equidigital number, since it uses as much as digits as its factorization.

20874083859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257704751 (or 257704742 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 20874083859 in words is "twenty billion, eight hundred seventy-four million, eighty-three thousand, eight hundred fifty-nine".