64544610164 has 12 divisors (see below), whose sum is σ = 112969259844. Its totient is φ = 32267678784.

The previous prime is 64544610161. The next prime is 64544610173. The reversal of 64544610164 is 46101644546.

64544610164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39498382564 + 25046227600 = 198742^2 + 158260^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64544610161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125089 + ... + 1181064.

It is an arithmetic number, because the mean of its divisors is an integer number (9414104987).

Almost surely, 2^64544610164 is an apocalyptic number.

It is an amenable number.

64544610164 is a deficient number, since it is larger than the sum of its proper divisors (48424649680).

64544610164 is a wasteful number, since it uses less digits than its factorization.

64544610164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313154 (or 2313152 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 64544610164 in words is "sixty-four billion, five hundred forty-four million, six hundred ten thousand, one hundred sixty-four".