28061116667 has 8 divisors (see below), whose sum is σ = 28107055200. Its totient is φ = 28015213824.

The previous prime is 28061116661. The next prime is 28061116709. The reversal of 28061116667 is 76661116082.

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 28061116667 - 2¹² = 28061112571 is a prime.

It is a super-3 number, since 3×28061116667³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28061116661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877498 + ... + 1892384.

It is an arithmetic number, because the mean of its divisors is an integer number (3513381900).

Almost surely, 2^28061116667 is an apocalyptic number.

28061116667 is a deficient number, since it is larger than the sum of its proper divisors (45938533).

28061116667 is a wasteful number, since it uses less digits than its factorization.

28061116667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17845.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 28061116667 in words is "twenty-eight billion, sixty-one million, one hundred sixteen thousand, six hundred sixty-seven".