343843640565 has 16 divisors (see below), whose sum is σ = 554349445056. Its totient is φ = 181983401600.

The previous prime is 343843640557. The next prime is 343843640587. The reversal of 343843640565 is 565046348343.

It is not a de Polignac number, because 343843640565 - 2³ = 343843640557 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 87490056 + ... + 87493985.

It is an arithmetic number, because the mean of its divisors is an integer number (34646840316).

Almost surely, 2^343843640565 is an apocalyptic number.

It is an amenable number.

343843640565 is a deficient number, since it is larger than the sum of its proper divisors (210505804491).

343843640565 is a wasteful number, since it uses less digits than its factorization.

343843640565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174984180.

The product of its (nonzero) digits is 12441600, while the sum is 51.

The spelling of 343843640565 in words is "three hundred forty-three billion, eight hundred forty-three million, six hundred forty thousand, five hundred sixty-five".