6646467755668 has 48 divisors (see below), whose sum is σ = 12610476990720. Its totient is φ = 3065087287392.

The previous prime is 6646467755663. The next prime is 6646467755701. The reversal of 6646467755668 is 8665577646466.

It is a super-2 number, since 2×6646467755668² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6646467755594 and 6646467755603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646467755663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10438521 + ... + 11056927.

It is an arithmetic number, because the mean of its divisors is an integer number (262718270640).

Almost surely, 2^{6646467755668} is an apocalyptic number.

It is an amenable number.

6646467755668 is a deficient number, since it is larger than the sum of its proper divisors (5964009235052).

6646467755668 is a wasteful number, since it uses less digits than its factorization.

6646467755668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619673 (or 619645 counting only the distinct ones).

The product of its digits is 7315660800, while the sum is 76.

The spelling of 6646467755668 in words is "six trillion, six hundred forty-six billion, four hundred sixty-seven million, seven hundred fifty-five thousand, six hundred sixty-eight".