64016881000 has 64 divisors (see below), whose sum is σ = 149966069760. Its totient is φ = 25578280000.

The previous prime is 64016880953. The next prime is 64016881031. The reversal of 64016881000 is 18861046.

It is a super-2 number, since 2×64016881000² (a number of 22 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 875865 + ... + 946135.

It is an arithmetic number, because the mean of its divisors is an integer number (2343219840).

Almost surely, 2^64016881000 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 64016881000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74983034880).

64016881000 is an abundant number, since it is smaller than the sum of its proper divisors (85949188760).

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

64016881000 is a wasteful number, since it uses less digits than its factorization.

64016881000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71203 (or 71189 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 64016881000 in words is "sixty-four billion, sixteen million, eight hundred eighty-one thousand".