20282489859 has 4 divisors (see below), whose sum is σ = 27043319816. Its totient is φ = 13521659904.

The previous prime is 20282489849. The next prime is 20282489861. The reversal of 20282489859 is 95898428202.

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

It is not a de Polignac number, because 20282489859 - 2²³ = 20274101251 is a prime.

It is a super-2 number, since 2×20282489859² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20282489799 and 20282489808.

It is not an unprimeable number, because it can be changed into a prime (20282489819) 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 3 ways as a sum of consecutive naturals, for example, 3380414974 + ... + 3380414979.

It is an arithmetic number, because the mean of its divisors is an integer number (6760829954).

Almost surely, 2^20282489859 is an apocalyptic number.

20282489859 is a deficient number, since it is larger than the sum of its proper divisors (6760829957).

20282489859 is an equidigital number, since it uses as much as digits as its factorization.

20282489859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760829956.

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 20282489859 in words is "twenty billion, two hundred eighty-two million, four hundred eighty-nine thousand, eight hundred fifty-nine".