64871643166 has 8 divisors (see below), whose sum is σ = 106153597944. Its totient is φ = 29487110520.

The previous prime is 64871643139. The next prime is 64871643217. The reversal of 64871643166 is 66134617846.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1474355505 + ... + 1474355548.

It is an arithmetic number, because the mean of its divisors is an integer number (13269199743).

Almost surely, 2^64871643166 is an apocalyptic number.

64871643166 is a deficient number, since it is larger than the sum of its proper divisors (41281954778).

64871643166 is a wasteful number, since it uses less digits than its factorization.

64871643166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948711066.

The product of its digits is 3483648, while the sum is 52.

The spelling of 64871643166 in words is "sixty-four billion, eight hundred seventy-one million, six hundred forty-three thousand, one hundred sixty-six".