1266530411611 has 8 divisors (see below), whose sum is σ = 1276275013200. Its totient is φ = 1256786968320.

The previous prime is 1266530411539. The next prime is 1266530411677. The reversal of 1266530411611 is 1161140356621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1266530411611 - 2¹¹ = 1266530409563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266530411681) 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 7 ways as a sum of consecutive naturals, for example, 1973475 + ... + 2535283.

It is an arithmetic number, because the mean of its divisors is an integer number (159534376650).

Almost surely, 2^{1266530411611} is an apocalyptic number.

1266530411611 is a deficient number, since it is larger than the sum of its proper divisors (9744601589).

1266530411611 is a wasteful number, since it uses less digits than its factorization.

1266530411611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579149.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 1266530411611 in words is "one trillion, two hundred sixty-six billion, five hundred thirty million, four hundred eleven thousand, six hundred eleven".