64412649205 has 16 divisors (see below), whose sum is σ = 81859315824. Its totient is φ = 48488647680.

The previous prime is 64412649199. The next prime is 64412649233. The reversal of 64412649205 is 50294621446.

It can be written as a sum of positive squares in 8 ways, for example, as 21858735409 + 42553913796 = 147847^2 + 206286^2 .

It is not a de Polignac number, because 64412649205 - 2⁵ = 64412649173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335239 + ... + 491131.

It is an arithmetic number, because the mean of its divisors is an integer number (5116207239).

Almost surely, 2^64412649205 is an apocalyptic number.

It is an amenable number.

64412649205 is a deficient number, since it is larger than the sum of its proper divisors (17446666619).

64412649205 is a wasteful number, since it uses less digits than its factorization.

64412649205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160776.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 64412649205 in words is "sixty-four billion, four hundred twelve million, six hundred forty-nine thousand, two hundred five".