8128547707 has 8 divisors (see below), whose sum is σ = 9291056096. Its totient is φ = 6966361152.

The previous prime is 8128547659. The next prime is 8128547729. The reversal of 8128547707 is 7077458218.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8128547707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8128547747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23658 + ... + 129679.

It is an arithmetic number, because the mean of its divisors is an integer number (1161382012).

Almost surely, 2^8128547707 is an apocalyptic number.

8128547707 is a deficient number, since it is larger than the sum of its proper divisors (1162508389).

8128547707 is a wasteful number, since it uses less digits than its factorization.

8128547707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160917.

The product of its (nonzero) digits is 878080, while the sum is 49.

The square root of 8128547707 is about 90158.4588765802. The cubic root of 8128547707 is about 2010.6554389107.

The spelling of 8128547707 in words is "eight billion, one hundred twenty-eight million, five hundred forty-seven thousand, seven hundred seven".