28016148081 has 4 divisors (see below), whose sum is σ = 37354864112. Its totient is φ = 18677432052.

The previous prime is 28016147989. The next prime is 28016148089. The reversal of 28016148081 is 18084161082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28016148081 - 2¹¹ = 28016146033 is a prime.

It is a super-2 number, since 2×28016148081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28016148089) 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, 4669358011 + ... + 4669358016.

It is an arithmetic number, because the mean of its divisors is an integer number (9338716028).

Almost surely, 2^28016148081 is an apocalyptic number.

It is an amenable number.

28016148081 is a deficient number, since it is larger than the sum of its proper divisors (9338716031).

28016148081 is an equidigital number, since it uses as much as digits as its factorization.

28016148081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9338716030.

The product of its (nonzero) digits is 24576, while the sum is 39.

The spelling of 28016148081 in words is "twenty-eight billion, sixteen million, one hundred forty-eight thousand, eighty-one".