11546664511 has 16 divisors (see below), whose sum is σ = 11959694208. Its totient is φ = 11141568000.

The previous prime is 11546664509. The next prime is 11546664523.

11546664511 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 11546664511 - 2¹ = 11546664509 is a prime.

It is a super-2 number, since 2×11546664511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11546662511) 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, 1138981 + ... + 1149073.

It is an arithmetic number, because the mean of its divisors is an integer number (747480888).

Almost surely, 2^11546664511 is an apocalyptic number.

11546664511 is a deficient number, since it is larger than the sum of its proper divisors (413029697).

11546664511 is a wasteful number, since it uses less digits than its factorization.

11546664511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10482.

The product of its digits is 86400, while the sum is 40.

The spelling of 11546664511 in words is "eleven billion, five hundred forty-six million, six hundred sixty-four thousand, five hundred eleven".