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68146906727 = 83881931949
BaseRepresentation
bin111111011101110111…
…110100011001100111
320111220021102112210102
4333131313310121213
52104031102003402
651150052414315
74631513102234
oct773567643147
9214807375712
1068146906727
11269a0174729
121125a31739b
136570558263
14342687c78b
151b8cabb102
hexfdddf4667

68146906727 has 8 divisors (see below), whose sum is σ = 69046311600. Its totient is φ = 67249367680.

The previous prime is 68146906721. The next prime is 68146906813. The reversal of 68146906727 is 72760964186.

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 68146906727 - 210 = 68146905703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68146906721) 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, 392852 + ... + 539097.

It is an arithmetic number, because the mean of its divisors is an integer number (8630788950).

Almost surely, 268146906727 is an apocalyptic number.

68146906727 is a deficient number, since it is larger than the sum of its proper divisors (899404873).

68146906727 is an equidigital number, since it uses as much as digits as its factorization.

68146906727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932913.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 68146906727 in words is "sixty-eight billion, one hundred forty-six million, nine hundred six thousand, seven hundred twenty-seven".

Divisors: 1 83 881 73123 931949 77351767 821047069 68146906727