6843433440425 has 6 divisors (see below), whose sum is σ = 8485857466158. Its totient is φ = 5474746752320.

The previous prime is 6843433440419. The next prime is 6843433440433. The reversal of 6843433440425 is 5240443343486.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1329667284544 + 5513766155881 = 1153112^2 + 2348141^2 .

It is not a de Polignac number, because 6843433440425 - 2³² = 6839138473129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136868668784 + ... + 136868668833.

It is an arithmetic number, because the mean of its divisors is an integer number (1414309577693).

Almost surely, 2^{6843433440425} is an apocalyptic number.

It is an amenable number.

6843433440425 is a deficient number, since it is larger than the sum of its proper divisors (1642424025733).

6843433440425 is a wasteful number, since it uses less digits than its factorization.

6843433440425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273737337627 (or 273737337622 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 50.

The spelling of 6843433440425 in words is "six trillion, eight hundred forty-three billion, four hundred thirty-three million, four hundred forty thousand, four hundred twenty-five".