12471420318 has 128 divisors (see below), whose sum is σ = 31177267200. Its totient is φ = 3315755520.

The previous prime is 12471420289. The next prime is 12471420331. The reversal of 12471420318 is 81302417421.

It is a super-2 number, since 2×12471420318² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1747798 + ... + 1754918.

It is an arithmetic number, because the mean of its divisors is an integer number (243572400).

Almost surely, 2^12471420318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12471420318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15588633600).

12471420318 is an abundant number, since it is smaller than the sum of its proper divisors (18705846882).

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

12471420318 is a wasteful number, since it uses less digits than its factorization.

12471420318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7207 (or 7193 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

Adding to 12471420318 its reverse (81302417421), we get a palindrome (93773837739).

The spelling of 12471420318 in words is "twelve billion, four hundred seventy-one million, four hundred twenty thousand, three hundred eighteen".