12952543076640 has 144 divisors (see below), whose sum is σ = 44250957282168. Its totient is φ = 3450072711168.

The previous prime is 12952543076639. The next prime is 12952543076647. The reversal of 12952543076640 is 4667034525921.

It is a happy number.

12952543076640 is a `hidden beast` number, since 1 + 2 + 9 + 52 + 543 + 0 + 7 + 6 + 6 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12827371467024 + 125171609616 = 3581532^2 + 353796^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (12952543076647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3865297 + ... + 6391056.

Almost surely, 2^{12952543076640} is an apocalyptic number.

12952543076640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12952543076640 is an abundant number, since it is smaller than the sum of its proper divisors (31298414205528).

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

12952543076640 is a wasteful number, since it uses less digits than its factorization.

12952543076640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10257251 (or 10257240 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 12952543076640 in words is "twelve trillion, nine hundred fifty-two billion, five hundred forty-three million, seventy-six thousand, six hundred forty".