12181786116357 has 72 divisors (see below), whose sum is σ = 20349643188000. Its totient is φ = 6456301188480.

The previous prime is 12181786116299. The next prime is 12181786116373. The reversal of 12181786116357 is 75361168718121.

It is not a de Polignac number, because 12181786116357 - 2¹⁵ = 12181786083589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 12181786116297 and 12181786116306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12181786116377) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4059982 + ... + 6391167.

Almost surely, 2^{12181786116357} is an apocalyptic number.

It is an amenable number.

12181786116357 is a deficient number, since it is larger than the sum of its proper divisors (8167857071643).

12181786116357 is a wasteful number, since it uses less digits than its factorization.

12181786116357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451219 (or 10451195 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 57.

The spelling of 12181786116357 in words is "twelve trillion, one hundred eighty-one billion, seven hundred eighty-six million, one hundred sixteen thousand, three hundred fifty-seven".