12129765297 has 8 divisors (see below), whose sum is σ = 17417098944. Its totient is φ = 7464470928.

The previous prime is 12129765293. The next prime is 12129765299. The reversal of 12129765297 is 79256792121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12129765297 - 2² = 12129765293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12129765293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155509773 + ... + 155509850.

It is an arithmetic number, because the mean of its divisors is an integer number (2177137368).

Almost surely, 2^12129765297 is an apocalyptic number.

It is an amenable number.

12129765297 is a deficient number, since it is larger than the sum of its proper divisors (5287333647).

12129765297 is a wasteful number, since it uses less digits than its factorization.

12129765297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311019639.

The product of its digits is 952560, while the sum is 51.

The spelling of 12129765297 in words is "twelve billion, one hundred twenty-nine million, seven hundred sixty-five thousand, two hundred ninety-seven".