12645246474 has 160 divisors (see below), whose sum is σ = 33116054400. Its totient is φ = 3531952512.

The previous prime is 12645246463. The next prime is 12645246479. The reversal of 12645246474 is 47464254621.

It is a happy number.

12645246474 is a `hidden beast` number, since 1 + 2 + 64 + 524 + 64 + 7 + 4 = 666.

12645246474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12645246479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11320164 + ... + 11321280.

It is an arithmetic number, because the mean of its divisors is an integer number (206975340).

Almost surely, 2^12645246474 is an apocalyptic number.

12645246474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12645246474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16558027200).

12645246474 is an abundant number, since it is smaller than the sum of its proper divisors (20470807926).

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

12645246474 is a wasteful number, since it uses less digits than its factorization.

12645246474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 1345 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 45.

The spelling of 12645246474 in words is "twelve billion, six hundred forty-five million, two hundred forty-six thousand, four hundred seventy-four".