12181456293 has 48 divisors (see below), whose sum is σ = 17452650240. Its totient is φ = 7548266880.

The previous prime is 12181456291. The next prime is 12181456349. The reversal of 12181456293 is 39265418121.

It is not a de Polignac number, because 12181456293 - 2¹ = 12181456291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12181456291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30683571 + ... + 30683967.

It is an arithmetic number, because the mean of its divisors is an integer number (363596880).

Almost surely, 2^12181456293 is an apocalyptic number.

It is an amenable number.

12181456293 is a deficient number, since it is larger than the sum of its proper divisors (5271193947).

12181456293 is a wasteful number, since it uses less digits than its factorization.

12181456293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 827 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The spelling of 12181456293 in words is "twelve billion, one hundred eighty-one million, four hundred fifty-six thousand, two hundred ninety-three".