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12530502445 = 54779674953
BaseRepresentation
bin10111010101110000…
…00100101100101101
31012100021100110220011
423222320010230231
5201130302034240
65431220053221
7622342341046
oct135270045455
935307313804
1012530502445
115350161a4a
122518534211
1312490394b6
1486c2738cd
154d51116ea
hex2eae04b2d

12530502445 has 16 divisors (see below), whose sum is σ = 15550940160. Its totient is φ = 9686911104.

The previous prime is 12530502427. The next prime is 12530502461. The reversal of 12530502445 is 54420503521.

12530502445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12530502445 - 213 = 12530494253 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 318912 + ... + 356041.

It is an arithmetic number, because the mean of its divisors is an integer number (971933760).

Almost surely, 212530502445 is an apocalyptic number.

It is an amenable number.

12530502445 is a deficient number, since it is larger than the sum of its proper divisors (3020437715).

12530502445 is an equidigital number, since it uses as much as digits as its factorization.

12530502445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675084.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 12530502445 in words is "twelve billion, five hundred thirty million, five hundred two thousand, four hundred forty-five".

Divisors: 1 5 47 79 235 395 3713 18565 674953 3374765 31722791 53321287 158613955 266606435 2506100489 12530502445