12665051345 has 16 divisors (see below), whose sum is σ = 15656052288. Its totient is φ = 9828371520.

The previous prime is 12665051341. The next prime is 12665051353. The reversal of 12665051345 is 54315056621.

It is not a de Polignac number, because 12665051345 - 2² = 12665051341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12665051299 and 12665051308.

It is not an unprimeable number, because it can be changed into a prime (12665051341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42179 + ... + 164648.

It is an arithmetic number, because the mean of its divisors is an integer number (978503268).

Almost surely, 2^12665051345 is an apocalyptic number.

It is an amenable number.

12665051345 is a deficient number, since it is larger than the sum of its proper divisors (2991000943).

12665051345 is a wasteful number, since it uses less digits than its factorization.

12665051345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207200.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 12665051345 in words is "twelve billion, six hundred sixty-five million, fifty-one thousand, three hundred forty-five".