6434024240561 has 4 divisors (see below), whose sum is σ = 6434029408500. Its totient is φ = 6434019072624.

The previous prime is 6434024240551. The next prime is 6434024240597. The reversal of 6434024240561 is 1650424204346.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4550627568400 + 1883396672161 = 2133220^2 + 1372369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6434024240561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6434024240521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552755 + ... + 3629543.

It is an arithmetic number, because the mean of its divisors is an integer number (1608507352125).

Almost surely, 2^{6434024240561} is an apocalyptic number.

It is an amenable number.

6434024240561 is a deficient number, since it is larger than the sum of its proper divisors (5167939).

6434024240561 is a wasteful number, since it uses less digits than its factorization.

6434024240561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167938.

The product of its (nonzero) digits is 552960, while the sum is 41.

The spelling of 6434024240561 in words is "six trillion, four hundred thirty-four billion, twenty-four million, two hundred forty thousand, five hundred sixty-one".