11666735555 has 8 divisors (see below), whose sum is σ = 14027590800. Its totient is φ = 9315049696.

The previous prime is 11666735543. The next prime is 11666735569. The reversal of 11666735555 is 55553766611.

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 11666735555 - 2⁶ = 11666735491 is a prime.

It is a super-2 number, since 2×11666735555² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2289545 + ... + 2294634.

It is an arithmetic number, because the mean of its divisors is an integer number (1753448850).

Almost surely, 2^11666735555 is an apocalyptic number.

11666735555 is a deficient number, since it is larger than the sum of its proper divisors (2360855245).

11666735555 is an equidigital number, since it uses as much as digits as its factorization.

11666735555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584693.

The product of its digits is 2835000, while the sum is 50.

The spelling of 11666735555 in words is "eleven billion, six hundred sixty-six million, seven hundred thirty-five thousand, five hundred fifty-five".