12666938036157 has 48 divisors (see below), whose sum is σ = 19049176104000. Its totient is φ = 8318935141920.

The previous prime is 12666938036117. The next prime is 12666938036167. The reversal of 12666938036157 is 75163083966621.

It is not a de Polignac number, because 12666938036157 - 2⁷ = 12666938036029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12666938036094 and 12666938036103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666938036117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64817482 + ... + 65012612.

It is an arithmetic number, because the mean of its divisors is an integer number (396857835500).

Almost surely, 2^{12666938036157} is an apocalyptic number.

It is an amenable number.

12666938036157 is a deficient number, since it is larger than the sum of its proper divisors (6382238067843).

12666938036157 is an equidigital number, since it uses as much as digits as its factorization.

12666938036157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195655 (or 195566 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 12666938036157 in words is "twelve trillion, six hundred sixty-six billion, nine hundred thirty-eight million, thirty-six thousand, one hundred fifty-seven".