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64241244165 = 3575771060349
BaseRepresentation
bin111011110101000100…
…111001100000000101
320010211002020022222110
4323311010321200011
52023031224303130
645302332451233
74432646365020
oct736504714005
9203732208873
1064241244165
112527656462a
121054a319b19
13609a346b17
143175c841b7
151a0ec7cab0
hexef5139805

64241244165 has 32 divisors (see below), whose sum is σ = 117673401600. Its totient is φ = 29316501504.

The previous prime is 64241244127. The next prime is 64241244239. The reversal of 64241244165 is 56144214246.

It is not a de Polignac number, because 64241244165 - 214 = 64241227781 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469590 + ... + 590759.

It is an arithmetic number, because the mean of its divisors is an integer number (3677293800).

Almost surely, 264241244165 is an apocalyptic number.

It is an amenable number.

64241244165 is a deficient number, since it is larger than the sum of its proper divisors (53432157435).

64241244165 is a wasteful number, since it uses less digits than its factorization.

64241244165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060941.

The product of its digits is 184320, while the sum is 39.

The spelling of 64241244165 in words is "sixty-four billion, two hundred forty-one million, two hundred forty-four thousand, one hundred sixty-five".

Divisors: 1 3 5 7 15 21 35 105 577 1731 2885 4039 8655 12117 20195 60585 1060349 3181047 5301745 7422443 15905235 22267329 37112215 111336645 611821373 1835464119 3059106865 4282749611 9177320595 12848248833 21413748055 64241244165