64333701656 has 32 divisors (see below), whose sum is σ = 137874224640. Its totient is φ = 27568327968.

The previous prime is 64333701623. The next prime is 64333701659. The reversal of 64333701656 is 65610733346.

It is a happy number.

64333701656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64333701659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444401 + ... + 571103.

It is an arithmetic number, because the mean of its divisors is an integer number (4308569520).

Almost surely, 2^64333701656 is an apocalyptic number.

It is an amenable number.

64333701656 is an abundant number, since it is smaller than the sum of its proper divisors (73540522984).

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

64333701656 is a wasteful number, since it uses less digits than its factorization.

64333701656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135783 (or 135779 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 44.

The spelling of 64333701656 in words is "sixty-four billion, three hundred thirty-three million, seven hundred one thousand, six hundred fifty-six".