28107873113 has 4 divisors (see below), whose sum is σ = 28118175540. Its totient is φ = 28097570688.

The previous prime is 28107873107. The next prime is 28107873133. The reversal of 28107873113 is 31137870182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31137870182 = 2 ⋅15568935091.

It can be written as a sum of positive squares in 2 ways, for example, as 25093094464 + 3014778649 = 158408^2 + 54907^2 .

It is a cyclic number.

It is not a de Polignac number, because 28107873113 - 2⁸ = 28107872857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28107873133) 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, 5147120 + ... + 5152577.

It is an arithmetic number, because the mean of its divisors is an integer number (7029543885).

Almost surely, 2^28107873113 is an apocalyptic number.

It is an amenable number.

28107873113 is a deficient number, since it is larger than the sum of its proper divisors (10302427).

28107873113 is a wasteful number, since it uses less digits than its factorization.

28107873113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10302426.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 28107873113 in words is "twenty-eight billion, one hundred seven million, eight hundred seventy-three thousand, one hundred thirteen".