28056126517 has 8 divisors (see below), whose sum is σ = 28185861600. Its totient is φ = 27926445744.

The previous prime is 28056126479. The next prime is 28056126521. The reversal of 28056126517 is 71562165082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28056126517 - 2³¹ = 25908642869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056126557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321734 + ... + 1342792.

It is an arithmetic number, because the mean of its divisors is an integer number (3523232700).

Almost surely, 2^28056126517 is an apocalyptic number.

It is an amenable number.

28056126517 is a deficient number, since it is larger than the sum of its proper divisors (129735083).

28056126517 is a wasteful number, since it uses less digits than its factorization.

28056126517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27155.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 28056126517 in words is "twenty-eight billion, fifty-six million, one hundred twenty-six thousand, five hundred seventeen".