12538113742867 has 4 divisors (see below), whose sum is σ = 12709868725720. Its totient is φ = 12366358760016.

The previous prime is 12538113742859. The next prime is 12538113742873. The reversal of 12538113742867 is 76824731183521.

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 12538113742867 - 2³ = 12538113742859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12538113742267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85877491317 + ... + 85877491462.

It is an arithmetic number, because the mean of its divisors is an integer number (3177467181430).

Almost surely, 2^{12538113742867} is an apocalyptic number.

12538113742867 is a deficient number, since it is larger than the sum of its proper divisors (171754982853).

12538113742867 is an equidigital number, since it uses as much as digits as its factorization.

12538113742867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171754982852.

The product of its digits is 13547520, while the sum is 58.

The spelling of 12538113742867 in words is "twelve trillion, five hundred thirty-eight billion, one hundred thirteen million, seven hundred forty-two thousand, eight hundred sixty-seven".