7928643715 has 8 divisors (see below), whose sum is σ = 9612459360. Its totient is φ = 6277523712.

The previous prime is 7928643713. The next prime is 7928643791. The reversal of 7928643715 is 5173468297.

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

It is a cyclic number.

It is not a de Polignac number, because 7928643715 - 2¹ = 7928643713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7928643713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8173375 + ... + 8174344.

It is an arithmetic number, because the mean of its divisors is an integer number (1201557420).

Almost surely, 2^7928643715 is an apocalyptic number.

7928643715 is a deficient number, since it is larger than the sum of its proper divisors (1683815645).

7928643715 is a wasteful number, since it uses less digits than its factorization.

7928643715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16347821.

The product of its digits is 2540160, while the sum is 52.

The square root of 7928643715 is about 89042.9318643541. The cubic root of 7928643715 is about 1994.0358752034.

The spelling of 7928643715 in words is "seven billion, nine hundred twenty-eight million, six hundred forty-three thousand, seven hundred fifteen".