6647542457466 has 8 divisors (see below), whose sum is σ = 13295084914944. Its totient is φ = 2215847485820.

The previous prime is 6647542457453. The next prime is 6647542457467.

6647542457466 is nontrivially palindromic in base 10.

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

6647542457466 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 6647542457397 and 6647542457406.

It is not an unprimeable number, because it can be changed into a prime (6647542457467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553961871450 + ... + 553961871461.

It is an arithmetic number, because the mean of its divisors is an integer number (1661885614368).

Almost surely, 2^{6647542457466} is an apocalyptic number.

6647542457466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6647542457466 is a wasteful number, since it uses less digits than its factorization.

6647542457466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107923742916.

The product of its digits is 812851200, while the sum is 66.

The spelling of 6647542457466 in words is "six trillion, six hundred forty-seven billion, five hundred forty-two million, four hundred fifty-seven thousand, four hundred sixty-six".