64486866309 has 8 divisors (see below), whose sum is σ = 91040281920. Its totient is φ = 40462347456.

The previous prime is 64486866287. The next prime is 64486866319. The reversal of 64486866309 is 90366868446.

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

It is not a de Polignac number, because 64486866309 - 2⁹ = 64486865797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64486866319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632224129 + ... + 632224230.

It is an arithmetic number, because the mean of its divisors is an integer number (11380035240).

Almost surely, 2^64486866309 is an apocalyptic number.

It is an amenable number.

64486866309 is a deficient number, since it is larger than the sum of its proper divisors (26553415611).

64486866309 is a wasteful number, since it uses less digits than its factorization.

64486866309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264448379.

The product of its (nonzero) digits is 35831808, while the sum is 60.

The spelling of 64486866309 in words is "sixty-four billion, four hundred eighty-six million, eight hundred sixty-six thousand, three hundred nine".