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64238187104 = 25713219314367
BaseRepresentation
bin111011110100111001…
…001111001001100000
320010210212111000110222
4323310321033021200
52023024433441404
645302143142212
74432611403220
oct736471171140
9203725430428
1064238187104
1125274866833
12105492a4968
136099816500
1431756ca080
151a0e876dbe
hexef4e4f260

64238187104 has 576 divisors, whose sum is σ = 176613212160. Its totient is φ = 22417274880.

The previous prime is 64238187089. The next prime is 64238187121. The reversal of 64238187104 is 40178183246.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 958778879 + ... + 958778945.

It is an arithmetic number, because the mean of its divisors is an integer number (306620160).

Almost surely, 264238187104 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 64238187104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88306606080).

64238187104 is an abundant number, since it is smaller than the sum of its proper divisors (112375025056).

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

64238187104 is a wasteful number, since it uses less digits than its factorization.

64238187104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 64238187104 in words is "sixty-four billion, two hundred thirty-eight million, one hundred eighty-seven thousand, one hundred four".