28130326823109 has 8 divisors (see below), whose sum is σ = 42865259920960. Its totient is φ = 16074472470336.

The previous prime is 28130326823087. The next prime is 28130326823219. The reversal of 28130326823109 is 90132862303182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28130326823109 - 2⁵ = 28130326823077 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 (28130326823909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669769686244 + ... + 669769686285.

It is an arithmetic number, because the mean of its divisors is an integer number (5358157490120).

Almost surely, 2^{28130326823109} is an apocalyptic number.

It is an amenable number.

28130326823109 is a deficient number, since it is larger than the sum of its proper divisors (14734933097851).

28130326823109 is a wasteful number, since it uses less digits than its factorization.

28130326823109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339539372539.

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 28130326823109 in words is "twenty-eight trillion, one hundred thirty billion, three hundred twenty-six million, eight hundred twenty-three thousand, one hundred nine".