12897017132 has 12 divisors (see below), whose sum is σ = 22747495680. Its totient is φ = 6397732656.

The previous prime is 12897017117. The next prime is 12897017137. The reversal of 12897017132 is 23171079821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12897017132.

It is not an unprimeable number, because it can be changed into a prime (12897017137) 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, 12693407 + ... + 12694422.

It is an arithmetic number, because the mean of its divisors is an integer number (1895624640).

Almost surely, 2^12897017132 is an apocalyptic number.

It is an amenable number.

12897017132 is a deficient number, since it is larger than the sum of its proper divisors (9850478548).

12897017132 is a wasteful number, since it uses less digits than its factorization.

12897017132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25387960 (or 25387958 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 12897017132 in words is "twelve billion, eight hundred ninety-seven million, seventeen thousand, one hundred thirty-two".