20359903285 has 8 divisors (see below), whose sum is σ = 24456896856. Its totient is φ = 16271247360.

The previous prime is 20359903261. The next prime is 20359903339. The reversal of 20359903285 is 58230995302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13280027121 + 7079876164 = 115239^2 + 84142^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20359903285 - 2²⁹ = 19823032373 is a prime.

It is a Duffinian 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, 2079036 + ... + 2088805.

It is an arithmetic number, because the mean of its divisors is an integer number (3057112107).

Almost surely, 2^20359903285 is an apocalyptic number.

It is an amenable number.

20359903285 is a deficient number, since it is larger than the sum of its proper divisors (4096993571).

20359903285 is an equidigital number, since it uses as much as digits as its factorization.

20359903285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4168823.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 20359903285 in words is "twenty billion, three hundred fifty-nine million, nine hundred three thousand, two hundred eighty-five".