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68456665486 = 2113191353487
BaseRepresentation
bin111111110000010101…
…011101000110001110
320112200212021220221001
4333300111131012032
52110144401243421
651240515530514
74642264025056
oct776025350616
9215625256831
1068456665486
112703a004000
1211325bb9a3a
1365bc791b71
143455a72566
151ba9da6691
hexff055d18e

68456665486 has 32 divisors (see below), whose sum is σ = 118890385920. Its totient is φ = 29478925080.

The previous prime is 68456665481. The next prime is 68456665489.

68456665486 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68456665481) 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, 626166 + ... + 727321.

It is an arithmetic number, because the mean of its divisors is an integer number (3715324560).

Almost surely, 268456665486 is an apocalyptic number.

68456665486 is a deficient number, since it is larger than the sum of its proper divisors (50433720434).

68456665486 is a wasteful number, since it uses less digits than its factorization.

68456665486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353541 (or 1353519 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 64.

The spelling of 68456665486 in words is "sixty-eight billion, four hundred fifty-six million, six hundred sixty-five thousand, four hundred eighty-six".

Divisors: 1 2 11 19 22 38 121 209 242 418 1331 2299 2662 4598 25289 50578 1353487 2706974 14888357 25716253 29776714 51432506 163771927 282878783 327543854 565757566 1801491197 3111666613 3602982394 6223333226 34228332743 68456665486