28130321157117 has 8 divisors (see below), whose sum is σ = 37516258609824. Its totient is φ = 18748965571248.

The previous prime is 28130321157089. The next prime is 28130321157121. The reversal of 28130321157117 is 71175112303182.

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

It is not a de Polignac number, because 28130321157117 - 2⁴² = 23732274646013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28130321957117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1145452383 + ... + 1145476940.

It is an arithmetic number, because the mean of its divisors is an integer number (4689532326228).

Almost surely, 2^{28130321157117} is an apocalyptic number.

It is an amenable number.

28130321157117 is a deficient number, since it is larger than the sum of its proper divisors (9385937452707).

28130321157117 is a wasteful number, since it uses less digits than its factorization.

28130321157117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290933419.

The product of its (nonzero) digits is 70560, while the sum is 42.

The spelling of 28130321157117 in words is "twenty-eight trillion, one hundred thirty billion, three hundred twenty-one million, one hundred fifty-seven thousand, one hundred seventeen".