28093131799 has 4 divisors (see below), whose sum is σ = 29314572336. Its totient is φ = 26871691264.

The previous prime is 28093131763. The next prime is 28093131827. The reversal of 28093131799 is 99713139082.

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 28093131799 - 2¹¹ = 28093129751 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 (28093131299) 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, 610720234 + ... + 610720279.

It is an arithmetic number, because the mean of its divisors is an integer number (7328643084).

Almost surely, 2^28093131799 is an apocalyptic number.

28093131799 is a deficient number, since it is larger than the sum of its proper divisors (1221440537).

28093131799 is a wasteful number, since it uses less digits than its factorization.

28093131799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221440536.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 28093131799 in words is "twenty-eight billion, ninety-three million, one hundred thirty-one thousand, seven hundred ninety-nine".