2539643421272 has 16 divisors (see below), whose sum is σ = 4761990534600. Its totient is φ = 1269779278720.

The previous prime is 2539643421239. The next prime is 2539643421281. The reversal of 2539643421272 is 2721243469352.

It is a self number, because there is not a number n which added to its sum of digits gives 2539643421272.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5048897 + ... + 5529072.

Almost surely, 2^{2539643421272} is an apocalyptic number.

It is an amenable number.

2539643421272 is a deficient number, since it is larger than the sum of its proper divisors (2222347113328).

2539643421272 is a wasteful number, since it uses less digits than its factorization.

2539643421272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10607986 (or 10607982 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 50.

The spelling of 2539643421272 in words is "two trillion, five hundred thirty-nine billion, six hundred forty-three million, four hundred twenty-one thousand, two hundred seventy-two".