12906797917 has 8 divisors (see below), whose sum is σ = 14161886424. Its totient is φ = 11689174848.

The previous prime is 12906797861. The next prime is 12906797957. The reversal of 12906797917 is 71979760921.

It can be written as a sum of positive squares in 4 ways, for example, as 157226521 + 12749571396 = 12539^2 + 112914^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-12906797917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906797957) 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, 9365638 + ... + 9367015.

It is an arithmetic number, because the mean of its divisors is an integer number (1770235803).

Almost surely, 2^12906797917 is an apocalyptic number.

It is an amenable number.

12906797917 is a deficient number, since it is larger than the sum of its proper divisors (1255088507).

12906797917 is a wasteful number, since it uses less digits than its factorization.

12906797917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18732719.

The product of its (nonzero) digits is 3000564, while the sum is 58.

The spelling of 12906797917 in words is "twelve billion, nine hundred six million, seven hundred ninety-seven thousand, nine hundred seventeen".