12378474001 has 4 divisors (see below), whose sum is σ = 12548042212. Its totient is φ = 12208905792.

The previous prime is 12378473923. The next prime is 12378474037. The reversal of 12378474001 is 10047487321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10047487321 = 113 ⋅88915817.

It can be written as a sum of positive squares in 2 ways, for example, as 3743604225 + 8634869776 = 61185^2 + 92924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12378474001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12378474071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84783996 + ... + 84784141.

It is an arithmetic number, because the mean of its divisors is an integer number (3137010553).

Almost surely, 2^12378474001 is an apocalyptic number.

It is an amenable number.

12378474001 is a deficient number, since it is larger than the sum of its proper divisors (169568211).

12378474001 is an equidigital number, since it uses as much as digits as its factorization.

12378474001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169568210.

The product of its (nonzero) digits is 37632, while the sum is 37.

The spelling of 12378474001 in words is "twelve billion, three hundred seventy-eight million, four hundred seventy-four thousand, one".