348350565509 has 4 divisors (see below), whose sum is σ = 348571181760. Its totient is φ = 348129949260.

The previous prime is 348350565481. The next prime is 348350565517. The reversal of 348350565509 is 905565053843.

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 348350565509 - 2¹² = 348350561413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (348350565539) 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 3 ways as a sum of consecutive naturals, for example, 110305757 + ... + 110308914.

It is an arithmetic number, because the mean of its divisors is an integer number (87142795440).

Almost surely, 2^348350565509 is an apocalyptic number.

It is an amenable number.

348350565509 is a deficient number, since it is larger than the sum of its proper divisors (220616251).

348350565509 is a wasteful number, since it uses less digits than its factorization.

348350565509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220616250.

The product of its (nonzero) digits is 9720000, while the sum is 53.

The spelling of 348350565509 in words is "three hundred forty-eight billion, three hundred fifty million, five hundred sixty-five thousand, five hundred nine".