64565061636 has 24 divisors (see below), whose sum is σ = 152143415424. Its totient is φ = 21308600800.

The previous prime is 64565061611. The next prime is 64565061643. The reversal of 64565061636 is 63616056546.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26634540 + ... + 26636963.

It is an arithmetic number, because the mean of its divisors is an integer number (6339308976).

Almost surely, 2^64565061636 is an apocalyptic number.

It is an amenable number.

64565061636 is an abundant number, since it is smaller than the sum of its proper divisors (87578353788).

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

64565061636 is a wasteful number, since it uses less digits than its factorization.

64565061636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53271611 (or 53271609 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 64565061636 in words is "sixty-four billion, five hundred sixty-five million, sixty-one thousand, six hundred thirty-six".