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12835966897 = 131669591601
BaseRepresentation
bin10111111010001010…
…10100111110110001
31020010120010200100101
423331011110332301
5202242001420042
65521411152401
7633041630005
oct137505247661
936116120311
1012835966897
115497628a06
1225a28a5701
1312973cb5b0
1489aa6a705
15501d4e6b7
hex2fd154fb1

12835966897 has 8 divisors (see below), whose sum is σ = 13831654760. Its totient is φ = 11841465600.

The previous prime is 12835966889. The next prime is 12835966991. The reversal of 12835966897 is 79866953821.

It can be written as a sum of positive squares in 4 ways, for example, as 57699216 + 12778267681 = 7596^2 + 113041^2 .

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 12835966897 - 23 = 12835966889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12835966817) 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, 274104 + ... + 317497.

It is an arithmetic number, because the mean of its divisors is an integer number (1728956845).

Almost surely, 212835966897 is an apocalyptic number.

It is an amenable number.

12835966897 is a deficient number, since it is larger than the sum of its proper divisors (995687863).

12835966897 is a wasteful number, since it uses less digits than its factorization.

12835966897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593283.

The product of its digits is 39191040, while the sum is 64.

The spelling of 12835966897 in words is "twelve billion, eight hundred thirty-five million, nine hundred sixty-six thousand, eight hundred ninety-seven".

Divisors: 1 13 1669 21697 591601 7690813 987382069 12835966897