12644882460 has 240 divisors, whose sum is σ = 46561040064. Its totient is φ = 2812050432.

The previous prime is 12644882401. The next prime is 12644882519. The reversal of 12644882460 is 6428844621.

12644882460 is a `hidden beast` number, since 12 + 64 + 48 + 82 + 460 = 666.

It is an interprime number because it is at equal distance from previous prime (12644882401) and next prime (12644882519).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 404512 + ... + 434648.

Almost surely, 2^12644882460 is an apocalyptic number.

12644882460 is a gapful number since it is divisible by the number (10) 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 12644882460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23280520032).

12644882460 is an abundant number, since it is smaller than the sum of its proper divisors (33916157604).

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

12644882460 is a wasteful number, since it uses less digits than its factorization.

12644882460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30202 (or 30191 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The spelling of 12644882460 in words is "twelve billion, six hundred forty-four million, eight hundred eighty-two thousand, four hundred sixty".