7143642865 has 16 divisors (see below), whose sum is σ = 8620698240. Its totient is φ = 5682787200.

The previous prime is 7143642859. The next prime is 7143642881. The reversal of 7143642865 is 5682463417.

It is a de Polignac number, because none of the positive numbers 2^k-7143642865 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668565 + ... + 679165.

It is an arithmetic number, because the mean of its divisors is an integer number (538793640).

Almost surely, 2^7143642865 is an apocalyptic number.

It is an amenable number.

7143642865 is a deficient number, since it is larger than the sum of its proper divisors (1477055375).

7143642865 is a wasteful number, since it uses less digits than its factorization.

7143642865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11352.

The product of its digits is 967680, while the sum is 46.

The square root of 7143642865 is about 84520.0737399110. The cubic root of 7143642865 is about 1925.9273984200.

The spelling of 7143642865 in words is "seven billion, one hundred forty-three million, six hundred forty-two thousand, eight hundred sixty-five".