12641006566 has 16 divisors (see below), whose sum is σ = 19236990240. Its totient is φ = 6228754560.

The previous prime is 12641006561. The next prime is 12641006569. The reversal of 12641006566 is 66560014621.

It is a super-2 number, since 2×12641006566² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641006561) 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, 327790 + ... + 364318.

It is an arithmetic number, because the mean of its divisors is an integer number (1202311890).

Almost surely, 2^12641006566 is an apocalyptic number.

12641006566 is a deficient number, since it is larger than the sum of its proper divisors (6595983674).

12641006566 is a wasteful number, since it uses less digits than its factorization.

12641006566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39039.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 12641006566 in words is "twelve billion, six hundred forty-one million, six thousand, five hundred sixty-six".