6744433404437 has 4 divisors (see below), whose sum is σ = 6744512400780. Its totient is φ = 6744354408096.

The previous prime is 6744433404413. The next prime is 6744433404473. The reversal of 6744433404437 is 7344043344476.

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 5083360946161 + 1661072458276 = 2254631^2 + 1288826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6744433404437 is a prime.

It is a super-2 number, since 2×6744433404437² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6744433404637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39369968 + ... + 39540905.

It is an arithmetic number, because the mean of its divisors is an integer number (1686128100195).

Almost surely, 2^{6744433404437} is an apocalyptic number.

It is an amenable number.

6744433404437 is a deficient number, since it is larger than the sum of its proper divisors (78996343).

6744433404437 is an equidigital number, since it uses as much as digits as its factorization.

6744433404437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78996342.

The product of its (nonzero) digits is 32514048, while the sum is 53.

The spelling of 6744433404437 in words is "six trillion, seven hundred forty-four billion, four hundred thirty-three million, four hundred four thousand, four hundred thirty-seven".