64329683986 has 32 divisors (see below), whose sum is σ = 106655771520. Its totient is φ = 28944934656.

The previous prime is 64329683897. The next prime is 64329683987. The reversal of 64329683986 is 68938692346.

It is not an unprimeable number, because it can be changed into a prime (64329683987) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2101680 + ... + 2132068.

It is an arithmetic number, because the mean of its divisors is an integer number (3332992860).

Almost surely, 2^64329683986 is an apocalyptic number.

64329683986 is a deficient number, since it is larger than the sum of its proper divisors (42326087534).

64329683986 is a wasteful number, since it uses less digits than its factorization.

64329683986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33138.

The product of its digits is 80621568, while the sum is 64.

The spelling of 64329683986 in words is "sixty-four billion, three hundred twenty-nine million, six hundred eighty-three thousand, nine hundred eighty-six".