12640241532938 has 16 divisors (see below), whose sum is σ = 18977048595360. Its totient is φ = 6314560066416.

The previous prime is 12640241532937. The next prime is 12640241532991. The reversal of 12640241532938 is 83923514204621.

It is a super-2 number, since 2×12640241532938² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12640241532937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17939981 + ... + 18631247.

It is an arithmetic number, because the mean of its divisors is an integer number (1186065537210).

Almost surely, 2^{12640241532938} is an apocalyptic number.

12640241532938 is a deficient number, since it is larger than the sum of its proper divisors (6336807062422).

12640241532938 is a wasteful number, since it uses less digits than its factorization.

12640241532938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699301.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 12640241532938 in words is "twelve trillion, six hundred forty billion, two hundred forty-one million, five hundred thirty-two thousand, nine hundred thirty-eight".