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68205701349 = 3322311327969
BaseRepresentation
bin111111100001011000…
…000110100011100101
320112001101001121212000
4333201120012203211
52104141124420344
651155552515513
74633125616152
oct774130064345
9215041047760
1068205701349
1126a20381a25
1211275b4bb99
13657c7a2686
1434305c5229
151b92d31a69
hexfe16068e5

68205701349 has 16 divisors (see below), whose sum is σ = 101498611200. Its totient is φ = 45266560128.

The previous prime is 68205701323. The next prime is 68205701353. The reversal of 68205701349 is 94310750286.

68205701349 is a `hidden beast` number, since 6 + 8 + 20 + 570 + 13 + 49 = 666.

68205701349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 68205701349 - 215 = 68205668581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68205701359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5657964 + ... + 5670005.

It is an arithmetic number, because the mean of its divisors is an integer number (6343663200).

It is a 1-persistent number, because it is pandigital, but 2⋅68205701349 = 136411402698 is not.

Almost surely, 268205701349 is an apocalyptic number.

It is an amenable number.

68205701349 is a deficient number, since it is larger than the sum of its proper divisors (33292909851).

68205701349 is a wasteful number, since it uses less digits than its factorization.

68205701349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11328201 (or 11328195 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 68205701349 in words is "sixty-eight billion, two hundred five million, seven hundred one thousand, three hundred forty-nine".

Divisors: 1 3 9 27 223 669 2007 6021 11327969 33983907 101951721 305855163 2526137087 7578411261 22735233783 68205701349