28551707317 has 16 divisors (see below), whose sum is σ = 34062077952. Its totient is φ = 23400028080.

The previous prime is 28551707297. The next prime is 28551707323. The reversal of 28551707317 is 71370715582.

It is a cyclic number.

It is not a de Polignac number, because 28551707317 - 2¹⁹ = 28551183029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28551707117) 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 15 ways as a sum of consecutive naturals, for example, 413442 + ... + 477532.

It is an arithmetic number, because the mean of its divisors is an integer number (2128879872).

Almost surely, 2^28551707317 is an apocalyptic number.

It is an amenable number.

28551707317 is a deficient number, since it is larger than the sum of its proper divisors (5510370635).

28551707317 is a wasteful number, since it uses less digits than its factorization.

28551707317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66888.

The product of its (nonzero) digits is 411600, while the sum is 46.

The spelling of 28551707317 in words is "twenty-eight billion, five hundred fifty-one million, seven hundred seven thousand, three hundred seventeen".