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68726000057 = 111323371035483
BaseRepresentation
bin100000000000001100…
…0111000100110111001
320120101122002112111112
41000000120320212321
52111222324000212
651323340410105
74652044235051
oct1000030704671
9216348075445
1068726000057
1127168043060
12113a0246935
136633513b30
14347d742561
151bc3859422
hex10006389b9

68726000057 has 64 divisors (see below), whose sum is σ = 87384600576. Its totient is φ = 53142946560.

The previous prime is 68726000029. The next prime is 68726000107. The reversal of 68726000057 is 75000062786.

It is a happy number.

It is not a de Polignac number, because 68726000057 - 210 = 68725999033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68725999978 and 68726000023.

It is not an unprimeable number, because it can be changed into a prime (68726000257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12531638 + ... + 12537120.

It is an arithmetic number, because the mean of its divisors is an integer number (1365384384).

Almost surely, 268726000057 is an apocalyptic number.

It is an amenable number.

68726000057 is a deficient number, since it is larger than the sum of its proper divisors (18658600519).

68726000057 is a wasteful number, since it uses less digits than its factorization.

68726000057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 68726000057 in words is "sixty-eight billion, seven hundred twenty-six million, fifty-seven", and thus it is an aban number.

Divisors: 1 11 13 23 37 103 143 253 299 407 481 851 1133 1339 2369 3289 3811 5291 5483 9361 11063 14729 26059 30797 41921 49543 60313 71279 87653 121693 126109 202871 338767 544973 564749 784069 964183 1139489 1387199 1639417 2231581 2637323 4666033 6212239 7341737 12534379 12989227 18033587 20895713 29010553 51326363 60658429 80759107 142881497 168859951 229852843 271644269 480601399 667242719 1857459461 2988086959 5286615389 6247818187 68726000057