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68457530005 = 519720605579
BaseRepresentation
bin111111110000011000…
…110000001010010101
320112200220220211211021
4333300120300022111
52110200111430010
651240550241141
74642304255404
oct776030601225
9215626824737
1068457530005
112703a544587
12113263561b1
1365bca05507
143455c1963b
151ba9ec78da
hexff0630295

68457530005 has 8 divisors (see below), whose sum is σ = 86472669600. Its totient is φ = 51883601616.

The previous prime is 68457530003. The next prime is 68457530017. The reversal of 68457530005 is 50003575486.

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 68457530005 - 21 = 68457530003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68457530003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360302695 + ... + 360302884.

It is an arithmetic number, because the mean of its divisors is an integer number (10809083700).

Almost surely, 268457530005 is an apocalyptic number.

It is an amenable number.

68457530005 is a deficient number, since it is larger than the sum of its proper divisors (18015139595).

68457530005 is a wasteful number, since it uses less digits than its factorization.

68457530005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720605603.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 68457530005 in words is "sixty-eight billion, four hundred fifty-seven million, five hundred thirty thousand, five".

Divisors: 1 5 19 95 720605579 3603027895 13691506001 68457530005