12138419935 has 4 divisors (see below), whose sum is σ = 14566103928. Its totient is φ = 9710735944.

The previous prime is 12138419897. The next prime is 12138419941. The reversal of 12138419935 is 53991483121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53991483121 = 4019 ⋅13434059.

It is a cyclic number.

It is not a de Polignac number, because 12138419935 - 2¹¹ = 12138417887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213841989 + ... + 1213841998.

It is an arithmetic number, because the mean of its divisors is an integer number (3641525982).

Almost surely, 2^12138419935 is an apocalyptic number.

12138419935 is a deficient number, since it is larger than the sum of its proper divisors (2427683993).

12138419935 is an equidigital number, since it uses as much as digits as its factorization.

12138419935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427683992.

The product of its digits is 233280, while the sum is 46.

The spelling of 12138419935 in words is "twelve billion, one hundred thirty-eight million, four hundred nineteen thousand, nine hundred thirty-five".