20352352209 has 8 divisors (see below), whose sum is σ = 31013108160. Its totient is φ = 11629915536.

The previous prime is 20352352157. The next prime is 20352352219. The reversal of 20352352209 is 90225325302.

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

It is not a de Polignac number, because 20352352209 - 2⁷ = 20352352081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20352352209.

It is not an unprimeable number, because it can be changed into a prime (20352352219) by changing a digit.

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, 484579794 + ... + 484579835.

It is an arithmetic number, because the mean of its divisors is an integer number (3876638520).

Almost surely, 2^20352352209 is an apocalyptic number.

It is an amenable number.

20352352209 is a deficient number, since it is larger than the sum of its proper divisors (10660755951).

20352352209 is an equidigital number, since it uses as much as digits as its factorization.

20352352209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969159639.

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 20352352209 in words is "twenty billion, three hundred fifty-two million, three hundred fifty-two thousand, two hundred nine".