345807013609 has 4 divisors (see below), whose sum is σ = 347291164116. Its totient is φ = 344322863104.

The previous prime is 345807013501. The next prime is 345807013661. The reversal of 345807013609 is 906310708543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 906310708543 = 39521 ⋅22932383.

It can be written as a sum of positive squares in 2 ways, for example, as 240298981209 + 105508032400 = 490203^2 + 324820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345807013609 is a prime.

It is a super-2 number, since 2×345807013609² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345807016609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742074904 + ... + 742075369.

It is an arithmetic number, because the mean of its divisors is an integer number (86822791029).

Almost surely, 2^345807013609 is an apocalyptic number.

It is an amenable number.

345807013609 is a deficient number, since it is larger than the sum of its proper divisors (1484150507).

345807013609 is a wasteful number, since it uses less digits than its factorization.

345807013609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484150506.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 345807013609 in words is "three hundred forty-five billion, eight hundred seven million, thirteen thousand, six hundred nine".