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12257719873 = 77369237631
BaseRepresentation
bin10110110101001110…
…11111011001000001
31011122021001200112221
423122213133121001
5200100434013443
65344153251041
7612520620430
oct133247373101
934567050487
1012257719873
115220188403
122461103a81
13120467aca9
14843d47117
154bb1cbeed
hex2da9df641

12257719873 has 8 divisors (see below), whose sum is σ = 14010782720. Its totient is φ = 10505147040.

The previous prime is 12257719819. The next prime is 12257719921. The reversal of 12257719873 is 37891775221.

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 12257719873 - 217 = 12257588801 is a prime.

It is a super-2 number, since 2×122577198732 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12257719873.

It is not an unprimeable number, because it can be changed into a prime (12257719073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67233 + ... + 170398.

It is an arithmetic number, because the mean of its divisors is an integer number (1751347840).

Almost surely, 212257719873 is an apocalyptic number.

It is an amenable number.

12257719873 is a deficient number, since it is larger than the sum of its proper divisors (1753062847).

12257719873 is an equidigital number, since it uses as much as digits as its factorization.

12257719873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245007.

The product of its digits is 1481760, while the sum is 52.

The spelling of 12257719873 in words is "twelve billion, two hundred fifty-seven million, seven hundred nineteen thousand, eight hundred seventy-three".

Divisors: 1 7 7369 51583 237631 1663417 1751102839 12257719873