28666671383 has 4 divisors (see below), whose sum is σ = 32761910160. Its totient is φ = 24571432608.

The previous prime is 28666671367. The next prime is 28666671421. The reversal of 28666671383 is 38317666682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28666671383 - 2⁴ = 28666671367 is a prime.

It is a super-2 number, since 2×28666671383² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28666671353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2047619378 + ... + 2047619391.

It is an arithmetic number, because the mean of its divisors is an integer number (8190477540).

Almost surely, 2^28666671383 is an apocalyptic number.

28666671383 is a deficient number, since it is larger than the sum of its proper divisors (4095238777).

28666671383 is an equidigital number, since it uses as much as digits as its factorization.

28666671383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095238776.

The product of its digits is 10450944, while the sum is 56.

The spelling of 28666671383 in words is "twenty-eight billion, six hundred sixty-six million, six hundred seventy-one thousand, three hundred eighty-three".