6647750577467 has 4 divisors (see below), whose sum is σ = 6809890835496. Its totient is φ = 6485610319440.

The previous prime is 6647750577463. The next prime is 6647750577511. The reversal of 6647750577467 is 7647750577466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6647750577467 - 2² = 6647750577463 is a prime.

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 6647750577467.

It is not an unprimeable number, because it can be changed into a prime (6647750577463) 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, 81070128953 + ... + 81070129034.

It is an arithmetic number, because the mean of its divisors is an integer number (1702472708874).

Almost surely, 2^{6647750577467} is an apocalyptic number.

6647750577467 is a deficient number, since it is larger than the sum of its proper divisors (162140258029).

6647750577467 is a wasteful number, since it uses less digits than its factorization.

6647750577467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162140258028.

The product of its (nonzero) digits is 1452124800, while the sum is 71.

Subtracting 6647750577467 from its reverse (7647750577466), we obtain a palindrome (999999999999).

The spelling of 6647750577467 in words is "six trillion, six hundred forty-seven billion, seven hundred fifty million, five hundred seventy-seven thousand, four hundred sixty-seven".