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12779672159 = 31426196749
BaseRepresentation
bin10111110011011101…
…00101001001011111
31012222122012121111002
423321232211021133
5202133044002114
65512040420515
7631456264262
oct137156451137
935878177432
1012779672159
115468878931
122587a7773b
13128884acb7
148933b4cd9
154ebe2e7de
hex2f9ba525f

12779672159 has 8 divisors (see below), whose sum is σ = 13195152000. Its totient is φ = 12364394400.

The previous prime is 12779672153. The next prime is 12779672177. The reversal of 12779672159 is 95127697721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12779672159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12779672153) 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, 83717 + ... + 180465.

It is an arithmetic number, because the mean of its divisors is an integer number (1649394000).

Almost surely, 212779672159 is an apocalyptic number.

12779672159 is a deficient number, since it is larger than the sum of its proper divisors (415479841).

12779672159 is an equidigital number, since it uses as much as digits as its factorization.

12779672159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101041.

The product of its digits is 3333960, while the sum is 56.

The spelling of 12779672159 in words is "twelve billion, seven hundred seventy-nine million, six hundred seventy-two thousand, one hundred fifty-nine".

Divisors: 1 31 4261 96749 132091 2999219 412247489 12779672159