6566661046 has 48 divisors (see below), whose sum is σ = 11410416864. Its totient is φ = 2826560000.

The previous prime is 6566661037. The next prime is 6566661047. The reversal of 6566661046 is 6401666656.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 6566660987 and 6566661005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566661047) 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 23 ways as a sum of consecutive naturals, for example, 556326 + ... + 568006.

It is an arithmetic number, because the mean of its divisors is an integer number (237717018).

Almost surely, 2^6566661046 is an apocalyptic number.

6566661046 is a deficient number, since it is larger than the sum of its proper divisors (4843755818).

6566661046 is a wasteful number, since it uses less digits than its factorization.

6566661046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11829 (or 11818 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The square root of 6566661046 is about 81034.9371937808. The cubic root of 6566661046 is about 1872.6137153274.

It can be divided in two parts, 65666610 and 46, that added together give a palindrome (65666656).

The spelling of 6566661046 in words is "six billion, five hundred sixty-six million, six hundred sixty-one thousand, forty-six".