64593655872 has 224 divisors, whose sum is σ = 187156904832. Its totient is φ = 19582058496.

The previous prime is 64593655853. The next prime is 64593655909. The reversal of 64593655872 is 27855639546.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11587678 + ... + 11593250.

Almost surely, 2^64593655872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64593655872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93578452416).

64593655872 is an abundant number, since it is smaller than the sum of its proper divisors (122563248960).

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

64593655872 is a wasteful number, since it uses less digits than its factorization.

64593655872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5725 (or 5715 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 60.

The spelling of 64593655872 in words is "sixty-four billion, five hundred ninety-three million, six hundred fifty-five thousand, eight hundred seventy-two".