7882840864 has 24 divisors (see below), whose sum is σ = 15528469068. Its totient is φ = 3939102720.

The previous prime is 7882840841. The next prime is 7882840879. The reversal of 7882840864 is 4680482887.

It can be written as a sum of positive squares in 2 ways, for example, as 7380184464 + 502656400 = 85908^2 + 22420^2 .

It is an unprimeable number.

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, 16497 + ... + 126640.

Almost surely, 2^7882840864 is an apocalyptic number.

It is an amenable number.

7882840864 is a deficient number, since it is larger than the sum of its proper divisors (7645628204).

7882840864 is a wasteful number, since it uses less digits than its factorization.

7882840864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144868 (or 144860 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 55.

The square root of 7882840864 is about 88785.3640190769. The cubic root of 7882840864 is about 1990.1886864343.

The spelling of 7882840864 in words is "seven billion, eight hundred eighty-two million, eight hundred forty thousand, eight hundred sixty-four".