43324256645 has 16 divisors (see below), whose sum is σ = 55066152240. Its totient is φ = 32609439744.

The previous prime is 43324256641. The next prime is 43324256663. The reversal of 43324256645 is 54665242334.

It can be written as a sum of positive squares in 8 ways, for example, as 2642576836 + 40681679809 = 51406^2 + 201697^2 .

It is a cyclic number.

It is not a de Polignac number, because 43324256645 - 2² = 43324256641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43324256596 and 43324256605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43324256641) 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, 166529 + ... + 338201.

It is an arithmetic number, because the mean of its divisors is an integer number (3441634515).

Almost surely, 2^43324256645 is an apocalyptic number.

It is an amenable number.

43324256645 is a deficient number, since it is larger than the sum of its proper divisors (11741895595).

43324256645 is a wasteful number, since it uses less digits than its factorization.

43324256645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174664.

The product of its digits is 2073600, while the sum is 44.

Adding to 43324256645 its reverse (54665242334), we get a palindrome (97989498979).

The spelling of 43324256645 in words is "forty-three billion, three hundred twenty-four million, two hundred fifty-six thousand, six hundred forty-five".