128479105287 has 64 divisors (see below), whose sum is σ = 221601408000. Its totient is φ = 72878258304.

The previous prime is 128479105283. The next prime is 128479105369. The reversal of 128479105287 is 782501974821.

128479105287 is a `hidden beast` number, since 1 + 28 + 4 + 7 + 91 + 0 + 528 + 7 = 666.

It is not a de Polignac number, because 128479105287 - 2² = 128479105283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128479105283) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13587 + ... + 507092.

It is an arithmetic number, because the mean of its divisors is an integer number (3462522000).

Almost surely, 2^128479105287 is an apocalyptic number.

128479105287 is a deficient number, since it is larger than the sum of its proper divisors (93122302713).

128479105287 is a wasteful number, since it uses less digits than its factorization.

128479105287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520757 (or 520751 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 128479105287 in words is "one hundred twenty-eight billion, four hundred seventy-nine million, one hundred five thousand, two hundred eighty-seven".