6749536909671 has 6 divisors (see below), whose sum is σ = 9749331091760. Its totient is φ = 4499691273108.

The previous prime is 6749536909613. The next prime is 6749536909741. The reversal of 6749536909671 is 1769096359476.

6749536909671 is a `hidden beast` number, since 6 + 7 + 495 + 3 + 69 + 0 + 9 + 6 + 71 = 666.

It is not a de Polignac number, because 6749536909671 - 2³³ = 6740946975079 is a prime.

It is a super-2 number, since 2×6749536909671² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6749536909671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6749536809671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 374974272751 + ... + 374974272768.

Almost surely, 2^{6749536909671} is an apocalyptic number.

6749536909671 is a deficient number, since it is larger than the sum of its proper divisors (2999794182089).

6749536909671 is a wasteful number, since it uses less digits than its factorization.

6749536909671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749948545525 (or 749948545522 counting only the distinct ones).

The product of its (nonzero) digits is 462944160, while the sum is 72.

The spelling of 6749536909671 in words is "six trillion, seven hundred forty-nine billion, five hundred thirty-six million, nine hundred nine thousand, six hundred seventy-one".