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68485612001 is a prime number
BaseRepresentation
bin111111110010000011…
…111000000111100001
320112202212202120002012
4333302003320013201
52110224304041001
651243432202305
74643065045202
oct776203700741
9215685676065
1068485612001
1127054384a44
1211333839395
1365c5788491
1434598495a9
151bac6c32bb
hexff20f81e1

68485612001 has 2 divisors, whose sum is σ = 68485612002. Its totient is φ = 68485612000.

The previous prime is 68485611991. The next prime is 68485612049. The reversal of 68485612001 is 10021658486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52785522001 + 15700090000 = 229751^2 + 125300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68485612001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68485612001.

It is not a weakly prime, because it can be changed into another prime (68485612501) 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 as a sum of consecutive naturals, namely, 34242806000 + 34242806001.

It is an arithmetic number, because the mean of its divisors is an integer number (34242806001).

Almost surely, 268485612001 is an apocalyptic number.

It is an amenable number.

68485612001 is a deficient number, since it is larger than the sum of its proper divisors (1).

68485612001 is an equidigital number, since it uses as much as digits as its factorization.

68485612001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 68485612001 in words is "sixty-eight billion, four hundred eighty-five million, six hundred twelve thousand, one".