8028756641 has 4 divisors (see below), whose sum is σ = 8451322800. Its totient is φ = 7606190484.

The previous prime is 8028756509. The next prime is 8028756643. The reversal of 8028756641 is 1466578208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8028756641 - 2¹⁸ = 8028494497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8028756643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211283051 + ... + 211283088.

It is an arithmetic number, because the mean of its divisors is an integer number (2112830700).

Almost surely, 2^8028756641 is an apocalyptic number.

It is an amenable number.

8028756641 is a deficient number, since it is larger than the sum of its proper divisors (422566159).

8028756641 is a wasteful number, since it uses less digits than its factorization.

8028756641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422566158.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 8028756641 is about 89603.3294080080. The cubic root of 8028756641 is about 2002.3935211356.

The spelling of 8028756641 in words is "eight billion, twenty-eight million, seven hundred fifty-six thousand, six hundred forty-one".