11666155565067 has 32 divisors (see below), whose sum is σ = 15614245785600. Its totient is φ = 7747817208192.

The previous prime is 11666155565033. The next prime is 11666155565081. The reversal of 11666155565067 is 76056555166611.

It is not a de Polignac number, because 11666155565067 - 2⁶ = 11666155565003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11666155565067.

It is not an unprimeable number, because it can be changed into a prime (11666155560067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3458686593 + ... + 3458689965.

It is an arithmetic number, because the mean of its divisors is an integer number (487945180800).

Almost surely, 2^{11666155565067} is an apocalyptic number.

11666155565067 is a deficient number, since it is larger than the sum of its proper divisors (3948090220533).

11666155565067 is a wasteful number, since it uses less digits than its factorization.

11666155565067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067.

The product of its (nonzero) digits is 34020000, while the sum is 60.

The spelling of 11666155565067 in words is "eleven trillion, six hundred sixty-six billion, one hundred fifty-five million, five hundred sixty-five thousand, sixty-seven".