64666910032 has 20 divisors (see below), whose sum is σ = 130739623200. Its totient is φ = 30927652448.

The previous prime is 64666910023. The next prime is 64666910051. The reversal of 64666910032 is 23001966646.

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 in 3 ways as a sum of consecutive naturals, for example, 87862282 + ... + 87863017.

It is an arithmetic number, because the mean of its divisors is an integer number (6536981160).

Almost surely, 2^64666910032 is an apocalyptic number.

It is an amenable number.

64666910032 is an abundant number, since it is smaller than the sum of its proper divisors (66072713168).

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

64666910032 is a wasteful number, since it uses less digits than its factorization.

64666910032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175725330 (or 175725324 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 64666910032 in words is "sixty-four billion, six hundred sixty-six million, nine hundred ten thousand, thirty-two".