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68805948799 = 732513023507
BaseRepresentation
bin100000000010100100…
…1110111010101111111
320120121012112100120001
41000011021313111333
52111403310330144
651335314135131
74654034625550
oct1000511672577
9216535470501
1068805948799
11271a91897a5
1211402b814a7
136646c56a93
14348a1d4327
151bca89cbd4
hex100527757f

68805948799 has 8 divisors (see below), whose sum is σ = 78659584128. Its totient is φ = 58958367000.

The previous prime is 68805948787. The next prime is 68805948803. The reversal of 68805948799 is 99784950886.

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

It is a cyclic number.

It is not a de Polignac number, because 68805948799 - 217 = 68805817727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68805948199) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1488997 + ... + 1534510.

It is an arithmetic number, because the mean of its divisors is an integer number (9832448016).

Almost surely, 268805948799 is an apocalyptic number.

68805948799 is a deficient number, since it is larger than the sum of its proper divisors (9853635329).

68805948799 is a wasteful number, since it uses less digits than its factorization.

68805948799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026765.

The product of its (nonzero) digits is 313528320, while the sum is 73.

The spelling of 68805948799 in words is "sixty-eight billion, eight hundred five million, nine hundred forty-eight thousand, seven hundred ninety-nine".

Divisors: 1 7 3251 22757 3023507 21164549 9829421257 68805948799