64849943088 has 320 divisors, whose sum is σ = 220614451200. Its totient is φ = 17847889920.

The previous prime is 64849943087. The next prime is 64849943131. The reversal of 64849943088 is 88034994846.

64849943088 is a `hidden beast` number, since 64 + 8 + 499 + 4 + 3 + 0 + 88 = 666.

64849943088 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 (63).

It is not an unprimeable number, because it can be changed into a prime (64849943083) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21840868 + ... + 21843836.

It is an arithmetic number, because the mean of its divisors is an integer number (689420160).

Almost surely, 2^64849943088 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 64849943088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110307225600).

64849943088 is an abundant number, since it is smaller than the sum of its proper divisors (155764508112).

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

64849943088 is a wasteful number, since it uses less digits than its factorization.

64849943088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257 (or 3245 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 63.

The spelling of 64849943088 in words is "sixty-four billion, eight hundred forty-nine million, nine hundred forty-three thousand, eighty-eight".