12891246234 has 16 divisors (see below), whose sum is σ = 27299109888. Its totient is φ = 4044312512.

The previous prime is 12891246229. The next prime is 12891246239. The reversal of 12891246234 is 43264219821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12891246229) and next prime (12891246239).

It is not an unprimeable number, because it can be changed into a prime (12891246239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63192282 + ... + 63192485.

It is an arithmetic number, because the mean of its divisors is an integer number (1706194368).

Almost surely, 2^12891246234 is an apocalyptic number.

12891246234 is an abundant number, since it is smaller than the sum of its proper divisors (14407863654).

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

12891246234 is a wasteful number, since it uses less digits than its factorization.

12891246234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126384789.

The product of its digits is 165888, while the sum is 42.

The spelling of 12891246234 in words is "twelve billion, eight hundred ninety-one million, two hundred forty-six thousand, two hundred thirty-four".