28097507959 has 6 divisors (see below), whose sum is σ = 28877425584. Its totient is φ = 27338114520.

The previous prime is 28097507957. The next prime is 28097507987. The reversal of 28097507959 is 95970579082.

It is not a de Polignac number, because 28097507959 - 2¹ = 28097507957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28097507897 and 28097507906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28097507951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10260687 + ... + 10263424.

It is an arithmetic number, because the mean of its divisors is an integer number (4812904264).

Almost surely, 2^28097507959 is an apocalyptic number.

28097507959 is a deficient number, since it is larger than the sum of its proper divisors (779917625).

28097507959 is an equidigital number, since it uses as much as digits as its factorization.

28097507959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20524185 (or 20524148 counting only the distinct ones).

The product of its (nonzero) digits is 14288400, while the sum is 61.

The spelling of 28097507959 in words is "twenty-eight billion, ninety-seven million, five hundred seven thousand, nine hundred fifty-nine".