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12289357087 = 78811992761
BaseRepresentation
bin10110111001000000…
…01011010100011111
31011201110121000122121
423130200023110133
5200132033411322
65351243323411
7613353545260
oct133440132437
934643530577
1012289357087
115237026967
12246b820567
13120b0a7237
14848220967
154bdd7aec7
hex2dc80b51f

12289357087 has 8 divisors (see below), whose sum is σ = 14060928672. Its totient is φ = 10521772800.

The previous prime is 12289357081. The next prime is 12289357117. The reversal of 12289357087 is 78075398221.

12289357087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12289357087 - 215 = 12289324319 is a prime.

It is a super-2 number, since 2×122893570872 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12289357081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990214 + ... + 1002547.

It is an arithmetic number, because the mean of its divisors is an integer number (1757616084).

Almost surely, 212289357087 is an apocalyptic number.

12289357087 is a deficient number, since it is larger than the sum of its proper divisors (1771571585).

12289357087 is an equidigital number, since it uses as much as digits as its factorization.

12289357087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993649.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 12289357087 in words is "twelve billion, two hundred eighty-nine million, three hundred fifty-seven thousand, eighty-seven".

Divisors: 1 7 881 6167 1992761 13949327 1755622441 12289357087