6744400780344 has 64 divisors (see below), whose sum is σ = 17067526187040. Its totient is φ = 2220686008320.

The previous prime is 6744400780333. The next prime is 6744400780349. The reversal of 6744400780344 is 4430870044476.

It is a super-2 number, since 2×6744400780344² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6744400780349) 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, 1567419 + ... + 3993194.

Almost surely, 2^{6744400780344} is an apocalyptic number.

It is an amenable number.

6744400780344 is an abundant number, since it is smaller than the sum of its proper divisors (10323125406696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6744400780344 is a wasteful number, since it uses less digits than its factorization.

6744400780344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561240 (or 5561236 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 51.

The spelling of 6744400780344 in words is "six trillion, seven hundred forty-four billion, four hundred million, seven hundred eighty thousand, three hundred forty-four".