12471918320 has 20 divisors (see below), whose sum is σ = 28997210280. Its totient is φ = 4988767296.

The previous prime is 12471918317. The next prime is 12471918323. The reversal of 12471918320 is 2381917421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12471918317) and next prime (12471918323).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12471918323) 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 3 ways as a sum of consecutive naturals, for example, 77949410 + ... + 77949569.

It is an arithmetic number, because the mean of its divisors is an integer number (1449860514).

Almost surely, 2^12471918320 is an apocalyptic number.

12471918320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12471918320 is an abundant number, since it is smaller than the sum of its proper divisors (16525291960).

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

12471918320 is a wasteful number, since it uses less digits than its factorization.

12471918320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155898992 (or 155898986 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 12471918320 in words is "twelve billion, four hundred seventy-one million, nine hundred eighteen thousand, three hundred twenty".