6435775345 has 4 divisors (see below), whose sum is σ = 7722930420. Its totient is φ = 5148620272.

The previous prime is 6435775343. The next prime is 6435775349. The reversal of 6435775345 is 5435775346.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2948164209 + 3487611136 = 54297^2 + 59056^2 .

It is a cyclic number.

It is not a de Polignac number, because 6435775345 - 2¹ = 6435775343 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6435775343) 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, 643577530 + ... + 643577539.

It is an arithmetic number, because the mean of its divisors is an integer number (1930732605).

Almost surely, 2^6435775345 is an apocalyptic number.

It is an amenable number.

6435775345 is a deficient number, since it is larger than the sum of its proper divisors (1287155075).

6435775345 is a wasteful number, since it uses less digits than its factorization.

6435775345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287155074.

The product of its digits is 5292000, while the sum is 49.

The square root of 6435775345 is about 80223.2843069891. The cubic root of 6435775345 is about 1860.0885749047.

Subtracting from 6435775345 its reverse (5435775346), we obtain a palindrome (999999999).

The spelling of 6435775345 in words is "six billion, four hundred thirty-five million, seven hundred seventy-five thousand, three hundred forty-five".