1166358340881 has 12 divisors (see below), whose sum is σ = 1773410343120. Its totient is φ = 736647373080.

The previous prime is 1166358340867. The next prime is 1166358340883. The reversal of 1166358340881 is 1880438536611.

It is a happy number.

1166358340881 is a `hidden beast` number, since 1 + 16 + 6 + 3 + 583 + 40 + 8 + 8 + 1 = 666.

It is not a de Polignac number, because 1166358340881 - 2³⁴ = 1149178471697 is a prime.

It is a super-2 number, since 2×1166358340881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166358340883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3410404335 + ... + 3410404676.

It is an arithmetic number, because the mean of its divisors is an integer number (147784195260).

Almost surely, 2^{1166358340881} is an apocalyptic number.

It is an amenable number.

1166358340881 is a deficient number, since it is larger than the sum of its proper divisors (607052002239).

1166358340881 is a wasteful number, since it uses less digits than its factorization.

1166358340881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6820809036 (or 6820809033 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 1166358340881 in words is "one trillion, one hundred sixty-six billion, three hundred fifty-eight million, three hundred forty thousand, eight hundred eighty-one".