64031565312 has 960 divisors, whose sum is σ = 232717605120. Its totient is φ = 17318707200.

The previous prime is 64031565293. The next prime is 64031565341. The reversal of 64031565312 is 21356513046.

64031565312 is a `hidden beast` number, since 6 + 40 + 31 + 56 + 531 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1049697762 + ... + 1049697822.

It is an arithmetic number, because the mean of its divisors is an integer number (242414172).

Almost surely, 2^64031565312 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 64031565312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116358802560).

64031565312 is an abundant number, since it is smaller than the sum of its proper divisors (168686039808).

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

64031565312 is a wasteful number, since it uses less digits than its factorization.

64031565312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 64031565312 in words is "sixty-four billion, thirty-one million, five hundred sixty-five thousand, three hundred twelve".