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68030218751 = 1119325503439
BaseRepresentation
bin111111010110111010…
…101100000111111111
320111121010212011222112
4333112322230013333
52103311214000001
651130323404235
74625565214115
oct772672540777
9214533764875
1068030218751
1126940315290
121122722367b
136552320a11
143415185ab5
151b8271bcbb
hexfd6eac1ff

68030218751 has 8 divisors (see below), whose sum is σ = 78120825600. Its totient is φ = 58590618840.

The previous prime is 68030218721. The next prime is 68030218799. The reversal of 68030218751 is 15781203086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68030218751 - 226 = 67963109887 is a prime.

It is a super-2 number, since 2×680302187512 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68030218699 and 68030218708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68030218721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162751511 + ... + 162751928.

It is an arithmetic number, because the mean of its divisors is an integer number (9765103200).

Almost surely, 268030218751 is an apocalyptic number.

68030218751 is a deficient number, since it is larger than the sum of its proper divisors (10090606849).

68030218751 is a wasteful number, since it uses less digits than its factorization.

68030218751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325503469.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 68030218751 in words is "sixty-eight billion, thirty million, two hundred eighteen thousand, seven hundred fifty-one".

Divisors: 1 11 19 209 325503439 3580537829 6184565341 68030218751