64549528308 has 18 divisors (see below), whose sum is σ = 163166863314. Its totient is φ = 21516509424.

The previous prime is 64549528283. The next prime is 64549528361. The reversal of 64549528308 is 80382594546.

64549528308 is a `hidden beast` number, since 6 + 45 + 49 + 528 + 30 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57810431844 + 6739096464 = 240438^2 + 82092^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 896521191 + ... + 896521262.

Almost surely, 2^64549528308 is an apocalyptic number.

It is an amenable number.

64549528308 is an abundant number, since it is smaller than the sum of its proper divisors (98617335006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64549528308 is a wasteful number, since it uses less digits than its factorization.

64549528308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793042463 (or 1793042458 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 64549528308 in words is "sixty-four billion, five hundred forty-nine million, five hundred twenty-eight thousand, three hundred eight".