64901728028 has 6 divisors (see below), whose sum is σ = 113578024056. Its totient is φ = 32450864012.

The previous prime is 64901728013. The next prime is 64901728039. The reversal of 64901728028 is 82082710946.

It is a happy number.

It is a zygodrome in base 2.

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 as a sum of consecutive naturals, namely, 8112716000 + ... + 8112716007.

It is an arithmetic number, because the mean of its divisors is an integer number (18929670676).

Almost surely, 2^64901728028 is an apocalyptic number.

It is an amenable number.

64901728028 is a deficient number, since it is larger than the sum of its proper divisors (48676296028).

64901728028 is a wasteful number, since it uses less digits than its factorization.

64901728028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16225432011 (or 16225432009 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 64901728028 in words is "sixty-four billion, nine hundred one million, seven hundred twenty-eight thousand, twenty-eight".