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12680275065 = 35845351671
BaseRepresentation
bin10111100111100110…
…11010010001111001
31012201201011201022020
423303303122101321
5201432122300230
65454130145053
7626141362653
oct136363322171
935651151266
1012680275065
115417759377
12255a722189
131271088a53
148840dd6d3
154e3348810
hex2f3cda479

12680275065 has 8 divisors (see below), whose sum is σ = 20288440128. Its totient is φ = 6762813360.

The previous prime is 12680275057. The next prime is 12680275067. The reversal of 12680275065 is 56057208621.

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

It is not a de Polignac number, because 12680275065 - 23 = 12680275057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12680275067) 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, 422675821 + ... + 422675850.

It is an arithmetic number, because the mean of its divisors is an integer number (2536055016).

Almost surely, 212680275065 is an apocalyptic number.

12680275065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12680275065 is a deficient number, since it is larger than the sum of its proper divisors (7608165063).

12680275065 is an equidigital number, since it uses as much as digits as its factorization.

12680275065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845351679.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 12680275065 in words is "twelve billion, six hundred eighty million, two hundred seventy-five thousand, sixty-five".

Divisors: 1 3 5 15 845351671 2536055013 4226758355 12680275065