28013051599 has 4 divisors (see below), whose sum is σ = 30167901736. Its totient is φ = 25858201464.

The previous prime is 28013051593. The next prime is 28013051617. The reversal of 28013051599 is 99515031082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99515031082 = 2 ⋅49757515541.

It is a cyclic number.

It is not a de Polignac number, because 28013051599 - 2⁵ = 28013051567 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 (28013051593) 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, 1077425049 + ... + 1077425074.

It is an arithmetic number, because the mean of its divisors is an integer number (7541975434).

Almost surely, 2^28013051599 is an apocalyptic number.

28013051599 is a deficient number, since it is larger than the sum of its proper divisors (2154850137).

28013051599 is a wasteful number, since it uses less digits than its factorization.

28013051599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154850136.

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 28013051599 in words is "twenty-eight billion, thirteen million, fifty-one thousand, five hundred ninety-nine".