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12741680686 = 27910120049
BaseRepresentation
bin10111101110111011…
…01001111000101110
31012212222201102222111
423313131221320232
5202043332240221
65504202234234
7630515333050
oct136735517056
935788642874
1012741680686
11544938a319
1225771b597a
131280a08737
1488c3258d0
154e8927be1
hex2f7769e2e

12741680686 has 8 divisors (see below), whose sum is σ = 21842881200. Its totient is φ = 5460720288.

The previous prime is 12741680669. The next prime is 12741680689. The reversal of 12741680686 is 68608614721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12741680689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455060011 + ... + 455060038.

It is an arithmetic number, because the mean of its divisors is an integer number (2730360150).

Almost surely, 212741680686 is an apocalyptic number.

12741680686 is a deficient number, since it is larger than the sum of its proper divisors (9101200514).

12741680686 is an equidigital number, since it uses as much as digits as its factorization.

12741680686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910120058.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 12741680686 in words is "twelve billion, seven hundred forty-one million, six hundred eighty thousand, six hundred eighty-six".

Divisors: 1 2 7 14 910120049 1820240098 6370840343 12741680686