12378085966101 has 4 divisors (see below), whose sum is σ = 16504114621472. Its totient is φ = 8252057310732.

The previous prime is 12378085966067. The next prime is 12378085966109. The reversal of 12378085966101 is 10166958087321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12378085966101 - 2¹⁵ = 12378085933333 is a prime.

It is a super-2 number, since 2×12378085966101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12378085966109) 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 3 ways as a sum of consecutive naturals, for example, 2063014327681 + ... + 2063014327686.

It is an arithmetic number, because the mean of its divisors is an integer number (4126028655368).

Almost surely, 2^{12378085966101} is an apocalyptic number.

It is an amenable number.

12378085966101 is a deficient number, since it is larger than the sum of its proper divisors (4126028655371).

12378085966101 is an equidigital number, since it uses as much as digits as its factorization.

12378085966101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126028655370.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 12378085966101 in words is "twelve trillion, three hundred seventy-eight billion, eighty-five million, nine hundred sixty-six thousand, one hundred one".