645610334343 has 16 divisors (see below), whose sum is σ = 931735971936. Its totient is φ = 395281918080.

The previous prime is 645610334287. The next prime is 645610334387. The reversal of 645610334343 is 343433016546.

It is not a de Polignac number, because 645610334343 - 2²¹ = 645608237191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645610334295 and 645610334304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645610334393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42007828 + ... + 42023193.

It is an arithmetic number, because the mean of its divisors is an integer number (58233498246).

Almost surely, 2^645610334343 is an apocalyptic number.

645610334343 is a deficient number, since it is larger than the sum of its proper divisors (286125637593).

645610334343 is a wasteful number, since it uses less digits than its factorization.

645610334343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84031234.

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 645610334343 in words is "six hundred forty-five billion, six hundred ten million, three hundred thirty-four thousand, three hundred forty-three".