1166116501055 has 24 divisors (see below), whose sum is σ = 1544834155200. Its totient is φ = 844381200960.

The previous prime is 1166116501003. The next prime is 1166116501093. The reversal of 1166116501055 is 5501056116611.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1166116501055 is a prime.

It is a super-2 number, since 2×1166116501055² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4069895 + ... + 4346984.

It is an arithmetic number, because the mean of its divisors is an integer number (64368089800).

Almost surely, 2^{1166116501055} is an apocalyptic number.

1166116501055 is a deficient number, since it is larger than the sum of its proper divisors (378717654145).

1166116501055 is a wasteful number, since it uses less digits than its factorization.

1166116501055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8417135 (or 8417124 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 1166116501055 in words is "one trillion, one hundred sixty-six billion, one hundred sixteen million, five hundred one thousand, fifty-five".