64091018880 has 1024 divisors, whose sum is σ = 277309440000. Its totient is φ = 13663862784.

The previous prime is 64091018867. The next prime is 64091018917. The reversal of 64091018880 is 8881019046.

64091018880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 181560784 + ... + 181561136.

It is an arithmetic number, because the mean of its divisors is an integer number (270810000).

Almost surely, 2^64091018880 is an apocalyptic number.

64091018880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64091018880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138654720000).

64091018880 is an abundant number, since it is smaller than the sum of its proper divisors (213218421120).

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

64091018880 is a wasteful number, since it uses less digits than its factorization.

64091018880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 64091018880 in words is "sixty-four billion, ninety-one million, eighteen thousand, eight hundred eighty".