8128747591547 has 16 divisors (see below), whose sum is σ = 8882013709440. Its totient is φ = 7377866179200.

The previous prime is 8128747591541. The next prime is 8128747591651. The reversal of 8128747591547 is 7451957478218.

It is not a de Polignac number, because 8128747591547 - 2⁶ = 8128747591483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8128747591541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53424104 + ... + 53576042.

It is an arithmetic number, because the mean of its divisors is an integer number (555125856840).

Almost surely, 2^{8128747591547} is an apocalyptic number.

8128747591547 is a deficient number, since it is larger than the sum of its proper divisors (753266117893).

8128747591547 is a wasteful number, since it uses less digits than its factorization.

8128747591547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159754.

The product of its digits is 158054400, while the sum is 68.

The spelling of 8128747591547 in words is "eight trillion, one hundred twenty-eight billion, seven hundred forty-seven million, five hundred ninety-one thousand, five hundred forty-seven".