28319708959 has 4 divisors (see below), whose sum is σ = 28320349120. Its totient is φ = 28319068800.

The previous prime is 28319708933. The next prime is 28319708971. The reversal of 28319708959 is 95980791382.

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 28319708959 - 2⁷ = 28319708831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28319708897 and 28319708906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28319708999) 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, 248367 + ... + 343984.

It is an arithmetic number, because the mean of its divisors is an integer number (7080087280).

Almost surely, 2^28319708959 is an apocalyptic number.

28319708959 is a deficient number, since it is larger than the sum of its proper divisors (640161).

28319708959 is an equidigital number, since it uses as much as digits as its factorization.

28319708959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640160.

The product of its (nonzero) digits is 9797760, while the sum is 61.

The spelling of 28319708959 in words is "twenty-eight billion, three hundred nineteen million, seven hundred eight thousand, nine hundred fifty-nine".