1181612043126 has 12 divisors (see below), whose sum is σ = 2560159426812. Its totient is φ = 393870681036.

The previous prime is 1181612043121. The next prime is 1181612043167. The reversal of 1181612043126 is 6213402161811.

1181612043126 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 612 + 0 + 4 + 31 + 2 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181612043121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32822556736 + ... + 32822556771.

It is an arithmetic number, because the mean of its divisors is an integer number (213346618901).

Almost surely, 2^{1181612043126} is an apocalyptic number.

1181612043126 is an abundant number, since it is smaller than the sum of its proper divisors (1378547383686).

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

1181612043126 is a wasteful number, since it uses less digits than its factorization.

1181612043126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65645113515 (or 65645113512 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 1181612043126 in words is "one trillion, one hundred eighty-one billion, six hundred twelve million, forty-three thousand, one hundred twenty-six".