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68868571211 = 1123365341149
BaseRepresentation
bin100000000100011100…
…0110000000001001011
320120202120100220100122
41000020320300001023
52112020323234321
651345432253455
74655425124306
oct1001070600113
9216676326318
1068868571211
1127230570960
121141bb4128b
136656c1156b
143494655b3d
151bd111c8ab
hex1008e3004b

68868571211 has 16 divisors (see below), whose sum is σ = 75569176800. Its totient is φ = 62242110720.

The previous prime is 68868571183. The next prime is 68868571223. The reversal of 68868571211 is 11217586886.

It is a cyclic number.

It is not a de Polignac number, because 68868571211 - 214 = 68868554827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68868573211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1653065 + ... + 1694213.

It is an arithmetic number, because the mean of its divisors is an integer number (4723073550).

Almost surely, 268868571211 is an apocalyptic number.

68868571211 is a deficient number, since it is larger than the sum of its proper divisors (6700605589).

68868571211 is a wasteful number, since it uses less digits than its factorization.

68868571211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42046.

The product of its digits is 1290240, while the sum is 53.

The spelling of 68868571211 in words is "sixty-eight billion, eight hundred sixty-eight million, five hundred seventy-one thousand, two hundred eleven".

Divisors: 1 11 233 653 2563 7183 41149 152149 452639 1673639 9587717 26870297 105464887 295573267 6260779201 68868571211