12895424640 has 1024 divisors, whose sum is σ = 57028608000. Its totient is φ = 2687385600.

The previous prime is 12895424627. The next prime is 12895424683. The reversal of 12895424640 is 4642459821.

It is a happy number.

12895424640 is a `hidden beast` number, since 1 + 28 + 9 + 542 + 46 + 40 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 71245350 + ... + 71245530.

It is an arithmetic number, because the mean of its divisors is an integer number (55692000).

Almost surely, 2^12895424640 is an apocalyptic number.

12895424640 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 12895424640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28514304000).

12895424640 is an abundant number, since it is smaller than the sum of its proper divisors (44133183360).

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

12895424640 is a wasteful number, since it uses less digits than its factorization.

12895424640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 12895424640 in words is "twelve billion, eight hundred ninety-five million, four hundred twenty-four thousand, six hundred forty".