28566132071 has 4 divisors (see below), whose sum is σ = 28714143312. Its totient is φ = 28418120832.

The previous prime is 28566132059. The next prime is 28566132107. The reversal of 28566132071 is 17023166582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17023166582 = 2 ⋅8511583291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28566132071 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 (28566192071) 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 3 ways as a sum of consecutive naturals, for example, 74005331 + ... + 74005716.

It is an arithmetic number, because the mean of its divisors is an integer number (7178535828).

Almost surely, 2^28566132071 is an apocalyptic number.

28566132071 is a deficient number, since it is larger than the sum of its proper divisors (148011241).

28566132071 is a wasteful number, since it uses less digits than its factorization.

28566132071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148011240.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 28566132071 in words is "twenty-eight billion, five hundred sixty-six million, one hundred thirty-two thousand, seventy-one".