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68707053337 = 135285157949
BaseRepresentation
bin111111111111010000…
…100110111100011001
320120100022102221111011
4333333100212330121
52111203001201322
651321422333521
74651424213566
oct777720467431
9216308387434
1068707053337
112715838210a
1211395a2a2a1
13662c60bc60
14347b00d86d
151bc1d65677
hexfff426f19

68707053337 has 4 divisors (see below), whose sum is σ = 73992211300. Its totient is φ = 63421895376.

The previous prime is 68707053271. The next prime is 68707053343. The reversal of 68707053337 is 73335070786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24605373321 + 44101680016 = 156861^2 + 210004^2 .

It is a cyclic number.

It is not a de Polignac number, because 68707053337 - 219 = 68706529049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68707053377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2642578962 + ... + 2642578987.

It is an arithmetic number, because the mean of its divisors is an integer number (18498052825).

Almost surely, 268707053337 is an apocalyptic number.

It is an amenable number.

68707053337 is a deficient number, since it is larger than the sum of its proper divisors (5285157963).

68707053337 is a wasteful number, since it uses less digits than its factorization.

68707053337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285157962.

The product of its (nonzero) digits is 2222640, while the sum is 49.

The spelling of 68707053337 in words is "sixty-eight billion, seven hundred seven million, fifty-three thousand, three hundred thirty-seven".

Divisors: 1 13 5285157949 68707053337