64000643067 has 12 divisors (see below), whose sum is σ = 93293497440. Its totient is φ = 42275653488.

The previous prime is 64000642987. The next prime is 64000643071. The reversal of 64000643067 is 76034600046.

64000643067 is a `hidden beast` number, since 6 + 4 + 0 + 0 + 0 + 643 + 0 + 6 + 7 = 666.

It is not a de Polignac number, because 64000643067 - 2¹⁹ = 64000118779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64000643167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32619123 + ... + 32621084.

It is an arithmetic number, because the mean of its divisors is an integer number (7774458120).

Almost surely, 2^64000643067 is an apocalyptic number.

64000643067 is a deficient number, since it is larger than the sum of its proper divisors (29292854373).

64000643067 is a wasteful number, since it uses less digits than its factorization.

64000643067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65240322 (or 65240319 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 64000643067 in words is "sixty-four billion, six hundred forty-three thousand, sixty-seven".