12718197648 has 120 divisors (see below), whose sum is σ = 38981255040. Its totient is φ = 3846931200.

The previous prime is 12718197617. The next prime is 12718197757. The reversal of 12718197648 is 84679181721.

It is a junction number, because it is equal to n+sod(n) for n = 12718197594 and 12718197603.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52873 + ... + 168023.

It is an arithmetic number, because the mean of its divisors is an integer number (324843792).

Almost surely, 2^12718197648 is an apocalyptic number.

12718197648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12718197648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19490627520).

12718197648 is an abundant number, since it is smaller than the sum of its proper divisors (26263057392).

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

12718197648 is a wasteful number, since it uses less digits than its factorization.

12718197648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115237 (or 115228 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 54.

The spelling of 12718197648 in words is "twelve billion, seven hundred eighteen million, one hundred ninety-seven thousand, six hundred forty-eight".