12161036454776 has 64 divisors (see below), whose sum is σ = 25074984672000. Its totient is φ = 5483419925760.

The previous prime is 12161036454767. The next prime is 12161036454793. The reversal of 12161036454776 is 67745463016121.

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, 5498765 + ... + 7386371.

It is an arithmetic number, because the mean of its divisors is an integer number (391796635500).

Almost surely, 2^{12161036454776} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12161036454776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12537492336000).

12161036454776 is an abundant number, since it is smaller than the sum of its proper divisors (12913948217224).

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

12161036454776 is a wasteful number, since it uses less digits than its factorization.

12161036454776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888212 (or 1888208 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 12161036454776 in words is "twelve trillion, one hundred sixty-one billion, thirty-six million, four hundred fifty-four thousand, seven hundred seventy-six".