7143642864 has 60 divisors (see below), whose sum is σ = 20861517456. Its totient is φ = 2277682176.

The previous prime is 7143642859. The next prime is 7143642881. The reversal of 7143642864 is 4682463417.

7143642864 is a `hidden beast` number, since 7 + 1 + 4 + 364 + 286 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1075137 + ... + 1081760.

Almost surely, 2^7143642864 is an apocalyptic number.

It is an amenable number.

7143642864 is an abundant number, since it is smaller than the sum of its proper divisors (13717874592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7143642864 is a wasteful number, since it uses less digits than its factorization.

7143642864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156934 (or 2156925 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 7143642864 is about 84520.0737339953. The cubic root of 7143642864 is about 1925.9273983302.

The spelling of 7143642864 in words is "seven billion, one hundred forty-three million, six hundred forty-two thousand, eight hundred sixty-four".