12315867447 has 32 divisors (see below), whose sum is σ = 18839616768. Its totient is φ = 7089348096.

The previous prime is 12315867433. The next prime is 12315867461. The reversal of 12315867447 is 74476851321.

It is an interprime number because it is at equal distance from previous prime (12315867433) and next prime (12315867461).

It is not a de Polignac number, because 12315867447 - 2²⁰ = 12314818871 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12315867396 and 12315867405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315867427) 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 31 ways as a sum of consecutive naturals, for example, 51088 + ... + 165050.

It is an arithmetic number, because the mean of its divisors is an integer number (588738024).

Almost surely, 2^12315867447 is an apocalyptic number.

12315867447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12315867447 is a deficient number, since it is larger than the sum of its proper divisors (6523749321).

12315867447 is a wasteful number, since it uses less digits than its factorization.

12315867447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114159.

The product of its digits is 1128960, while the sum is 48.

The spelling of 12315867447 in words is "twelve billion, three hundred fifteen million, eight hundred sixty-seven thousand, four hundred forty-seven".