12845631156 has 12 divisors (see below), whose sum is σ = 29973139392. Its totient is φ = 4281877048.

The previous prime is 12845631151. The next prime is 12845631247. The reversal of 12845631156 is 65113654821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12845631151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535234620 + ... + 535234643.

It is an arithmetic number, because the mean of its divisors is an integer number (2497761616).

Almost surely, 2^12845631156 is an apocalyptic number.

It is an amenable number.

12845631156 is an abundant number, since it is smaller than the sum of its proper divisors (17127508236).

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

12845631156 is a wasteful number, since it uses less digits than its factorization.

12845631156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070469270 (or 1070469268 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The spelling of 12845631156 in words is "twelve billion, eight hundred forty-five million, six hundred thirty-one thousand, one hundred fifty-six".