128663447593239 has 48 divisors (see below), whose sum is σ = 201462320596992. Its totient is φ = 78656073378624.

The previous prime is 128663447593193. The next prime is 128663447593267. The reversal of 128663447593239 is 932395744366821.

It is a happy number.

128663447593239 is a `hidden beast` number, since 1 + 2 + 8 + 6 + 6 + 3 + 4 + 4 + 7 + 593 + 23 + 9 = 666.

It is not a de Polignac number, because 128663447593239 - 2¹¹ = 128663447591191 is a prime.

It is a super-2 number, since 2×128663447593239² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128663447593139) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40561254 + ... + 43618140.

It is an arithmetic number, because the mean of its divisors is an integer number (4197131679104).

Almost surely, 2^{128663447593239} is an apocalyptic number.

128663447593239 is a deficient number, since it is larger than the sum of its proper divisors (72798873003753).

128663447593239 is a wasteful number, since it uses less digits than its factorization.

128663447593239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059276 (or 3059273 counting only the distinct ones).

The product of its digits is 1410877440, while the sum is 72.

The spelling of 128663447593239 in words is "one hundred twenty-eight trillion, six hundred sixty-three billion, four hundred forty-seven million, five hundred ninety-three thousand, two hundred thirty-nine".