11666100511 has 8 divisors (see below), whose sum is σ = 12636116640. Its totient is φ = 10706459232.

The previous prime is 11666100499. The next prime is 11666100521. The reversal of 11666100511 is 11500166611.

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 11666100511 - 2¹⁷ = 11665969439 is a prime.

It is a super-2 number, since 2×11666100511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11666100511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666100521) 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, 2591371 + ... + 2595868.

It is an arithmetic number, because the mean of its divisors is an integer number (1579514580).

Almost surely, 2^11666100511 is an apocalyptic number.

11666100511 is a deficient number, since it is larger than the sum of its proper divisors (970016129).

11666100511 is a wasteful number, since it uses less digits than its factorization.

11666100511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5187425.

The product of its (nonzero) digits is 1080, while the sum is 28.

It can be divided in two parts, 11666100 and 511, that added together give a palindrome (11666611).

The spelling of 11666100511 in words is "eleven billion, six hundred sixty-six million, one hundred thousand, five hundred eleven".