12891354714 has 64 divisors (see below), whose sum is σ = 32796288000. Its totient is φ = 3676906224.

The previous prime is 12891354713. The next prime is 12891354719. The reversal of 12891354714 is 41745319821.

12891354714 is a `hidden beast` number, since 1 + 2 + 8 + 91 + 3 + 547 + 14 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12891354714.

It is not an unprimeable number, because it can be changed into a prime (12891354713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192837 + ... + 250935.

It is an arithmetic number, because the mean of its divisors is an integer number (512442000).

Almost surely, 2^12891354714 is an apocalyptic number.

12891354714 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12891354714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16398144000).

12891354714 is an abundant number, since it is smaller than the sum of its proper divisors (19904933286).

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

12891354714 is a wasteful number, since it uses less digits than its factorization.

12891354714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58704 (or 58698 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 12891354714 in words is "twelve billion, eight hundred ninety-one million, three hundred fifty-four thousand, seven hundred fourteen".