345811588909 has 2 divisors, whose sum is σ = 345811588910. Its totient is φ = 345811588908.

The previous prime is 345811588897. The next prime is 345811588931. The reversal of 345811588909 is 909885118543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342968353225 + 2843235684 = 585635^2 + 53322^2 .

It is a cyclic number.

It is not a de Polignac number, because 345811588909 - 2⁷ = 345811588781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345811588999) 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 as a sum of consecutive naturals, namely, 172905794454 + 172905794455.

It is an arithmetic number, because the mean of its divisors is an integer number (172905794455).

Almost surely, 2^345811588909 is an apocalyptic number.

It is an amenable number.

345811588909 is a deficient number, since it is larger than the sum of its proper divisors (1).

345811588909 is an equidigital number, since it uses as much as digits as its factorization.

345811588909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12441600, while the sum is 61.

The spelling of 345811588909 in words is "three hundred forty-five billion, eight hundred eleven million, five hundred eighty-eight thousand, nine hundred nine".