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68066288763 = 31117121330283
BaseRepresentation
bin111111011001000100…
…010010010001111011
320111200122201201201220
4333121010102101323
52103344432220023
651134052443123
74626513623364
oct773104222173
9214618651656
1068066288763
1126959711210
12112373194a3
13655993c815
143419c94b6b
151b859943e3
hexfd911247b

68066288763 has 16 divisors (see below), whose sum is σ = 104829365376. Its totient is φ = 38825690240.

The previous prime is 68066288753. The next prime is 68066288767. The reversal of 68066288763 is 36788266086.

It is a cyclic number.

It is not a de Polignac number, because 68066288763 - 26 = 68066288699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68066288697 and 68066288706.

It is not an unprimeable number, because it can be changed into a prime (68066288767) 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 15 ways as a sum of consecutive naturals, for example, 60664581 + ... + 60665702.

It is an arithmetic number, because the mean of its divisors is an integer number (6551835336).

Almost surely, 268066288763 is an apocalyptic number.

68066288763 is a deficient number, since it is larger than the sum of its proper divisors (36763076613).

68066288763 is a wasteful number, since it uses less digits than its factorization.

68066288763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121330314.

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 68066288763 in words is "sixty-eight billion, sixty-six million, two hundred eighty-eight thousand, seven hundred sixty-three".

Divisors: 1 3 11 17 33 51 187 561 121330283 363990849 1334633113 2062614811 4003899339 6187844433 22688762921 68066288763