1266216532006 has 32 divisors (see below), whose sum is σ = 1921808501280. Its totient is φ = 625660766976.

The previous prime is 1266216532001. The next prime is 1266216532013. The reversal of 1266216532006 is 6002356126621.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266216532006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266216532001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67131805 + ... + 67150663.

It is an arithmetic number, because the mean of its divisors is an integer number (60056515665).

Almost surely, 2^{1266216532006} is an apocalyptic number.

1266216532006 is a deficient number, since it is larger than the sum of its proper divisors (655591969274).

1266216532006 is a wasteful number, since it uses less digits than its factorization.

1266216532006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20088.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 1266216532006 in words is "one trillion, two hundred sixty-six billion, two hundred sixteen million, five hundred thirty-two thousand, six".