20929119859 has 4 divisors (see below), whose sum is σ = 21839081616. Its totient is φ = 20019158104.

The previous prime is 20929119851. The next prime is 20929119863. The reversal of 20929119859 is 95891192902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20929119859 - 2³ = 20929119851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20929119851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454980844 + ... + 454980889.

It is an arithmetic number, because the mean of its divisors is an integer number (5459770404).

Almost surely, 2^20929119859 is an apocalyptic number.

20929119859 is a deficient number, since it is larger than the sum of its proper divisors (909961757).

20929119859 is an equidigital number, since it uses as much as digits as its factorization.

20929119859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909961756.

The product of its (nonzero) digits is 1049760, while the sum is 55.

The spelling of 20929119859 in words is "twenty billion, nine hundred twenty-nine million, one hundred nineteen thousand, eight hundred fifty-nine".