64384405885 has 16 divisors (see below), whose sum is σ = 80661619584. Its totient is φ = 49242922432.

The previous prime is 64384405871. The next prime is 64384405909. The reversal of 64384405885 is 58850448346.

It is a cyclic number.

It is not a de Polignac number, because 64384405885 - 2⁵ = 64384405853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85014 + ... + 368776.

It is an arithmetic number, because the mean of its divisors is an integer number (5041351224).

Almost surely, 2^64384405885 is an apocalyptic number.

It is an amenable number.

64384405885 is a deficient number, since it is larger than the sum of its proper divisors (16277213699).

64384405885 is a wasteful number, since it uses less digits than its factorization.

64384405885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285764.

The product of its (nonzero) digits is 14745600, while the sum is 55.

The spelling of 64384405885 in words is "sixty-four billion, three hundred eighty-four million, four hundred five thousand, eight hundred eighty-five".