12473646912 has 126 divisors (see below), whose sum is σ = 37980822438. Its totient is φ = 3913248768.

The previous prime is 12473646901. The next prime is 12473646919. The reversal of 12473646912 is 21964637421.

It can be written as a sum of positive squares in 3 ways, for example, as 4390917696 + 8082729216 = 66264^2 + 89904^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12473646919) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 128998 + ... + 203930.

Almost surely, 2^12473646912 is an apocalyptic number.

12473646912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12473646912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18990411219).

12473646912 is an abundant number, since it is smaller than the sum of its proper divisors (25507175526).

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

12473646912 is a wasteful number, since it uses less digits than its factorization.

12473646912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74985 (or 74955 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The spelling of 12473646912 in words is "twelve billion, four hundred seventy-three million, six hundred forty-six thousand, nine hundred twelve".