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68708238783 = 371322573891
BaseRepresentation
bin111111111111010101…
…001000010110111111
320120100101200011121120
4333333111020112333
52111203302120113
651321504002023
74651440251652
oct777725102677
9216311604546
1068708238783
1127159011818
1211396300313
13662c9356c2
14347b23b899
151bc1eeba23
hexfff5485bf

68708238783 has 8 divisors (see below), whose sum is σ = 92901280896. Its totient is φ = 45160344600.

The previous prime is 68708238779. The next prime is 68708238793. The reversal of 68708238783 is 38783280786.

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

It is not a de Polignac number, because 68708238783 - 22 = 68708238779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68708238763) 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, 161286733 + ... + 161287158.

It is an arithmetic number, because the mean of its divisors is an integer number (11612660112).

Almost surely, 268708238783 is an apocalyptic number.

68708238783 is a deficient number, since it is larger than the sum of its proper divisors (24193042113).

68708238783 is a wasteful number, since it uses less digits than its factorization.

68708238783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322573965.

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 68708238783 in words is "sixty-eight billion, seven hundred eight million, two hundred thirty-eight thousand, seven hundred eighty-three".

Divisors: 1 3 71 213 322573891 967721673 22902746261 68708238783