1165681125612 has 36 divisors (see below), whose sum is σ = 2946625552416. Its totient is φ = 388554743520.

The previous prime is 1165681125601. The next prime is 1165681125617. The reversal of 1165681125612 is 2165211865611.

1165681125612 is a `hidden beast` number, since 1 + 1 + 6 + 5 + 6 + 8 + 1 + 1 + 25 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1165681125617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2833062 + ... + 3218322.

Almost surely, 2^{1165681125612} is an apocalyptic number.

1165681125612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1165681125612 is an abundant number, since it is smaller than the sum of its proper divisors (1780944426804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165681125612 is a wasteful number, since it uses less digits than its factorization.

1165681125612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469318 (or 469313 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The spelling of 1165681125612 in words is "one trillion, one hundred sixty-five billion, six hundred eighty-one million, one hundred twenty-five thousand, six hundred twelve".