12897719212 has 24 divisors (see below), whose sum is σ = 25808057856. Its totient is φ = 5524889808.

The previous prime is 12897719203. The next prime is 12897719243. The reversal of 12897719212 is 21291779821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53878 + ... + 169405.

It is an arithmetic number, because the mean of its divisors is an integer number (1075335744).

Almost surely, 2^12897719212 is an apocalyptic number.

It is an amenable number.

12897719212 is an abundant number, since it is smaller than the sum of its proper divisors (12910338644).

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

12897719212 is a wasteful number, since it uses less digits than its factorization.

12897719212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225357 (or 225355 counting only the distinct ones).

The product of its digits is 254016, while the sum is 49.

The spelling of 12897719212 in words is "twelve billion, eight hundred ninety-seven million, seven hundred nineteen thousand, two hundred twelve".