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68465013331 = 11132232146979
BaseRepresentation
bin111111110000110101…
…010011001001010011
320112201110000001000111
4333300311103021103
52110204020411311
651241414502151
74642425003601
oct776065231123
9215643001014
1068465013331
1127043795950
1211328964957
1365c1425710
143456c06871
151baa9a4d21
hexff0d53253

68465013331 has 16 divisors (see below), whose sum is σ = 80795151360. Its totient is φ = 57195493920.

The previous prime is 68465013329. The next prime is 68465013343. The reversal of 68465013331 is 13331056486.

It is a cyclic number.

It is not a de Polignac number, because 68465013331 - 21 = 68465013329 is a prime.

It is a super-2 number, since 2×684650133312 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68465013361) 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, 1041601 + ... + 1105378.

It is an arithmetic number, because the mean of its divisors is an integer number (5049696960).

Almost surely, 268465013331 is an apocalyptic number.

68465013331 is a deficient number, since it is larger than the sum of its proper divisors (12330138029).

68465013331 is a wasteful number, since it uses less digits than its factorization.

68465013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147226.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 68465013331 in words is "sixty-eight billion, four hundred sixty-five million, thirteen thousand, three hundred thirty-one".

Divisors: 1 11 13 143 223 2453 2899 31889 2146979 23616769 27910727 307017997 478776317 5266539487 6224092121 68465013331