12665754007 has 4 divisors (see below), whose sum is σ = 12666462480. Its totient is φ = 12665045536.

The previous prime is 12665753999. The next prime is 12665754029. The reversal of 12665754007 is 70045756621.

12665754007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12665754007 - 2³ = 12665753999 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 (12665754037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326707 + ... + 363412.

It is an arithmetic number, because the mean of its divisors is an integer number (3166615620).

Almost surely, 2^12665754007 is an apocalyptic number.

12665754007 is a deficient number, since it is larger than the sum of its proper divisors (708473).

12665754007 is an equidigital number, since it uses as much as digits as its factorization.

12665754007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708472.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 12665754007 in words is "twelve billion, six hundred sixty-five million, seven hundred fifty-four thousand, seven".