64522138806 has 12 divisors (see below), whose sum is σ = 139797967452. Its totient is φ = 21507379596.

The previous prime is 64522138721. The next prime is 64522138853. The reversal of 64522138806 is 60883122546.

64522138806 is a `hidden beast` number, since 6 + 45 + 221 + 388 + 0 + 6 = 666.

It is a super-2 number, since 2×64522138806² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1792281616 + ... + 1792281651.

It is an arithmetic number, because the mean of its divisors is an integer number (11649830621).

Almost surely, 2^64522138806 is an apocalyptic number.

64522138806 is an abundant number, since it is smaller than the sum of its proper divisors (75275828646).

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

64522138806 is a wasteful number, since it uses less digits than its factorization.

64522138806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584563275 (or 3584563272 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 64522138806 in words is "sixty-four billion, five hundred twenty-two million, one hundred thirty-eight thousand, eight hundred six".