11662266115521 has 48 divisors (see below), whose sum is σ = 19645613769600. Its totient is φ = 6663907464480.

The previous prime is 11662266115519. The next prime is 11662266115553. The reversal of 11662266115521 is 12551166226611.

11662266115521 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 2 + 2 + 6 + 6 + 115 + 521 = 666.

11662266115521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11662266115521 - 2¹ = 11662266115519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11662266117521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114949306 + ... + 115050716.

It is an arithmetic number, because the mean of its divisors is an integer number (409283620200).

Almost surely, 2^{11662266115521} is an apocalyptic number.

It is an amenable number.

11662266115521 is a deficient number, since it is larger than the sum of its proper divisors (7983347654079).

11662266115521 is a wasteful number, since it uses less digits than its factorization.

11662266115521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138691 (or 138674 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The spelling of 11662266115521 in words is "eleven trillion, six hundred sixty-two billion, two hundred sixty-six million, one hundred fifteen thousand, five hundred twenty-one".