6546642466661 has 8 divisors (see below), whose sum is σ = 7141928371200. Its totient is φ = 5951379327040.

The previous prime is 6546642466631. The next prime is 6546642466667. The reversal of 6546642466661 is 1666642466456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6546642466661 - 2¹⁰ = 6546642465637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6546642466594 and 6546642466603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6546642466667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5087141 + ... + 6242778.

It is an arithmetic number, because the mean of its divisors is an integer number (892741046400).

Almost surely, 2^{6546642466661} is an apocalyptic number.

It is an amenable number.

6546642466661 is a deficient number, since it is larger than the sum of its proper divisors (595285904539).

6546642466661 is a wasteful number, since it uses less digits than its factorization.

6546642466661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11382459.

The product of its digits is 179159040, while the sum is 62.

The spelling of 6546642466661 in words is "six trillion, five hundred forty-six billion, six hundred forty-two million, four hundred sixty-six thousand, six hundred sixty-one".