345442861109 has 2 divisors, whose sum is σ = 345442861110. Its totient is φ = 345442861108.

The previous prime is 345442861079. The next prime is 345442861163. The reversal of 345442861109 is 901168244543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316177916209 + 29264944900 = 562297^2 + 171070^2 .

It is a cyclic number.

It is not a de Polignac number, because 345442861109 - 2⁸ = 345442860853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345442861909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172721430554 + 172721430555.

It is an arithmetic number, because the mean of its divisors is an integer number (172721430555).

Almost surely, 2^345442861109 is an apocalyptic number.

It is an amenable number.

345442861109 is a deficient number, since it is larger than the sum of its proper divisors (1).

345442861109 is an equidigital number, since it uses as much as digits as its factorization.

345442861109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 345442861109 in words is "three hundred forty-five billion, four hundred forty-two million, eight hundred sixty-one thousand, one hundred nine".