2355239397209 has 4 divisors (see below), whose sum is σ = 2355245017104. Its totient is φ = 2355233777316.

The previous prime is 2355239397131. The next prime is 2355239397223. The reversal of 2355239397209 is 9027939325532.

2355239397209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2355239397209 - 2²⁰ = 2355238348633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2355239397289) 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, 2125787 + ... + 3038000.

It is an arithmetic number, because the mean of its divisors is an integer number (588811254276).

Almost surely, 2^{2355239397209} is an apocalyptic number.

It is an amenable number.

2355239397209 is a deficient number, since it is larger than the sum of its proper divisors (5619895).

2355239397209 is an equidigital number, since it uses as much as digits as its factorization.

2355239397209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619894.

The product of its (nonzero) digits is 27556200, while the sum is 59.

The spelling of 2355239397209 in words is "two trillion, three hundred fifty-five billion, two hundred thirty-nine million, three hundred ninety-seven thousand, two hundred nine".