1166116166655 has 64 divisors (see below), whose sum is σ = 2047311092736. Its totient is φ = 562083840000.

The previous prime is 1166116166603. The next prime is 1166116166711. The reversal of 1166116166655 is 5566616116611.

It is not a de Polignac number, because 1166116166655 - 2²⁷ = 1165981948927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166116166598 and 1166116166607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 159803967 + ... + 159811263.

It is an arithmetic number, because the mean of its divisors is an integer number (31989235824).

Almost surely, 2^{1166116166655} is an apocalyptic number.

1166116166655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166116166655 is a deficient number, since it is larger than the sum of its proper divisors (881194926081).

1166116166655 is a wasteful number, since it uses less digits than its factorization.

1166116166655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12848.

The product of its digits is 1166400, while the sum is 51.

The spelling of 1166116166655 in words is "one trillion, one hundred sixty-six billion, one hundred sixteen million, one hundred sixty-six thousand, six hundred fifty-five".