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64043369707 = 571415726981
BaseRepresentation
bin111011101001010010…
…000100010011101011
320010022021220021020211
4323221102010103223
52022130100312312
645230543401551
74425024442402
oct735122042353
9203267807224
1064043369707
11251848a3619
12104b3bb32b7
136068355145
143157896639
1519ec6e33a7
hexee94844eb

64043369707 has 8 divisors (see below), whose sum is σ = 64173341232. Its totient is φ = 63913461600.

The previous prime is 64043369693. The next prime is 64043369723. The reversal of 64043369707 is 70796334046.

It is a happy number.

64043369707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-64043369707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64043369807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2360157 + ... + 2387137.

It is an arithmetic number, because the mean of its divisors is an integer number (8021667654).

Almost surely, 264043369707 is an apocalyptic number.

64043369707 is a deficient number, since it is larger than the sum of its proper divisors (129971525).

64043369707 is a wasteful number, since it uses less digits than its factorization.

64043369707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31709.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 64043369707 in words is "sixty-four billion, forty-three million, three hundred sixty-nine thousand, seven hundred seven".

Divisors: 1 571 4157 26981 2373647 15406151 112160017 64043369707