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68328054145 = 5134324446531
BaseRepresentation
bin111111101000101010…
…110101110110000001
320112100220021210100001
4333220222311312001
52104413440213040
651220043200001
74636142606641
oct775052656601
9215326253301
1068328054145
1126a8345043a
12112aab16001
13659bc41490
143442954521
151b9d94e59a
hexfe8ab5d81

68328054145 has 16 divisors (see below), whose sum is σ = 90354382272. Its totient is φ = 49284204480.

The previous prime is 68328054143. The next prime is 68328054161. The reversal of 68328054145 is 54145082386.

It is not a de Polignac number, because 68328054145 - 21 = 68328054143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68328054095 and 68328054104.

It is not an unprimeable number, because it can be changed into a prime (68328054143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12220471 + ... + 12226060.

It is an arithmetic number, because the mean of its divisors is an integer number (5647148892).

Almost surely, 268328054145 is an apocalyptic number.

68328054145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68328054145 is a deficient number, since it is larger than the sum of its proper divisors (22026328127).

68328054145 is a wasteful number, since it uses less digits than its factorization.

68328054145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24446592.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 68328054145 in words is "sixty-eight billion, three hundred twenty-eight million, fifty-four thousand, one hundred forty-five".

Divisors: 1 5 13 43 65 215 559 2795 24446531 122232655 317804903 1051200833 1589024515 5256004165 13665610829 68328054145