64545156608 has 40 divisors (see below), whose sum is σ = 128988744192. Its totient is φ = 32266448896.

The previous prime is 64545156601. The next prime is 64545156617. The reversal of 64545156608 is 80665154546.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64545156601) 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, 3994241 + ... + 4010367.

Almost surely, 2^64545156608 is an apocalyptic number.

It is an amenable number.

64545156608 is a deficient number, since it is larger than the sum of its proper divisors (64443587584).

64545156608 is an equidigital number, since it uses as much as digits as its factorization.

64545156608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23962 (or 23946 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 50.

The spelling of 64545156608 in words is "sixty-four billion, five hundred forty-five million, one hundred fifty-six thousand, six hundred eight".