64566040652 has 24 divisors (see below), whose sum is σ = 113390326896. Its totient is φ = 32168864448.

The previous prime is 64566040601. The next prime is 64566040661. The reversal of 64566040652 is 25604066546.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7527038 + ... + 7535610.

It is an arithmetic number, because the mean of its divisors is an integer number (4724596954).

Almost surely, 2^64566040652 is an apocalyptic number.

It is an amenable number.

64566040652 is a deficient number, since it is larger than the sum of its proper divisors (48824286244).

64566040652 is a wasteful number, since it uses less digits than its factorization.

64566040652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15017 (or 15015 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 64566040652 in words is "sixty-four billion, five hundred sixty-six million, forty thousand, six hundred fifty-two".