6566641126 has 16 divisors (see below), whose sum is σ = 9956746800. Its totient is φ = 3247825248.

The previous prime is 6566641111. The next prime is 6566641141. The reversal of 6566641126 is 6211466656.

It is an interprime number because it is at equal distance from previous prime (6566641111) and next prime (6566641141).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109065 + ... + 158203.

It is an arithmetic number, because the mean of its divisors is an integer number (622296675).

Almost surely, 2^6566641126 is an apocalyptic number.

6566641126 is a deficient number, since it is larger than the sum of its proper divisors (3390105674).

6566641126 is a wasteful number, since it uses less digits than its factorization.

6566641126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49863.

The product of its digits is 311040, while the sum is 43.

The square root of 6566641126 is about 81034.8142837386. The cubic root of 6566641126 is about 1872.6118217977.

The spelling of 6566641126 in words is "six billion, five hundred sixty-six million, six hundred forty-one thousand, one hundred twenty-six".