12396442905 has 160 divisors (see below), whose sum is σ = 28601008128. Its totient is φ = 4985193600.

The previous prime is 12396442879. The next prime is 12396442913. The reversal of 12396442905 is 50924469321.

12396442905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12396442905 - 2⁵ = 12396442873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 960324 + ... + 973146.

Almost surely, 2^12396442905 is an apocalyptic number.

12396442905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12396442905 is an abundant number, since it is smaller than the sum of its proper divisors (16204565223).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12396442905 is a wasteful number, since it uses less digits than its factorization.

12396442905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12889 (or 12880 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 12396442905 in words is "twelve billion, three hundred ninety-six million, four hundred forty-two thousand, nine hundred five".