12968218547 has 4 divisors (see below), whose sum is σ = 13532054160. Its totient is φ = 12404382936.

The previous prime is 12968218537. The next prime is 12968218553. The reversal of 12968218547 is 74581286921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74581286921 = 124981 ⋅596741.

It is a cyclic number.

It is not a de Polignac number, because 12968218547 - 2²⁸ = 12699783091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12968218507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281917772 + ... + 281917817.

It is an arithmetic number, because the mean of its divisors is an integer number (3383013540).

Almost surely, 2^12968218547 is an apocalyptic number.

12968218547 is a deficient number, since it is larger than the sum of its proper divisors (563835613).

12968218547 is an equidigital number, since it uses as much as digits as its factorization.

12968218547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563835612.

The product of its digits is 1935360, while the sum is 53.

The spelling of 12968218547 in words is "twelve billion, nine hundred sixty-eight million, two hundred eighteen thousand, five hundred forty-seven".