12138662507 has 8 divisors (see below), whose sum is σ = 12853922256. Its totient is φ = 11423538432.

The previous prime is 12138662479. The next prime is 12138662527. The reversal of 12138662507 is 70526683121.

12138662507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12138662507 - 2⁸ = 12138662251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12138662527) 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 7 ways as a sum of consecutive naturals, for example, 194168 + ... + 248954.

It is an arithmetic number, because the mean of its divisors is an integer number (1606740282).

Almost surely, 2^12138662507 is an apocalyptic number.

12138662507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12138662507 is a deficient number, since it is larger than the sum of its proper divisors (715259749).

12138662507 is a wasteful number, since it uses less digits than its factorization.

12138662507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67837.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 12138662507 in words is "twelve billion, one hundred thirty-eight million, six hundred sixty-two thousand, five hundred seven".