111436861671445 has 16 divisors (see below), whose sum is σ = 142438211935488. Its totient is φ = 83402974163200.

The previous prime is 111436861671383. The next prime is 111436861671491. The reversal of 111436861671445 is 544176168634111.

It is not a de Polignac number, because 111436861671445 - 2²³ = 111436853282837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111436861671445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3925201081 + ... + 3925229470.

It is an arithmetic number, because the mean of its divisors is an integer number (8902388245968).

Almost surely, 2^{111436861671445} is an apocalyptic number.

It is an amenable number.

111436861671445 is a deficient number, since it is larger than the sum of its proper divisors (31001350264043).

111436861671445 is a wasteful number, since it uses less digits than its factorization.

111436861671445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850430740.

The product of its digits is 11612160, while the sum is 58.

The spelling of 111436861671445 in words is "one hundred eleven trillion, four hundred thirty-six billion, eight hundred sixty-one million, six hundred seventy-one thousand, four hundred forty-five".