12315970905 has 48 divisors (see below), whose sum is σ = 24129276480. Its totient is φ = 5333827968.

The previous prime is 12315970903. The next prime is 12315970939. The reversal of 12315970905 is 50907951321.

It is not a de Polignac number, because 12315970905 - 2¹ = 12315970903 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12315970903) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 426994 + ... + 454923.

It is an arithmetic number, because the mean of its divisors is an integer number (502693260).

Almost surely, 2^12315970905 is an apocalyptic number.

12315970905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12315970905 is a deficient number, since it is larger than the sum of its proper divisors (11813305575).

12315970905 is a wasteful number, since it uses less digits than its factorization.

12315970905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881958 (or 881951 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 42.

The spelling of 12315970905 in words is "twelve billion, three hundred fifteen million, nine hundred seventy thousand, nine hundred five".