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12512401141 = 81231540367
BaseRepresentation
bin10111010011100110…
…00001011011110101
31012022000021211120111
423221303001123311
5201111133314031
65425332103021
7622032440422
oct135163013365
935260254514
1012512401141
115340a19199
122512464a71
13124536c376
14869ac0d49
154d37381b1
hex2e9cc16f5

12512401141 has 4 divisors (see below), whose sum is σ = 12513949632. Its totient is φ = 12510852652.

The previous prime is 12512401127. The next prime is 12512401159. The reversal of 12512401141 is 14110421521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14110421521 = 72015774503.

It is a cyclic number.

It is not a de Polignac number, because 12512401141 - 221 = 12510303989 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 (12512401541) 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 3 ways as a sum of consecutive naturals, for example, 762061 + ... + 778306.

It is an arithmetic number, because the mean of its divisors is an integer number (3128487408).

Almost surely, 212512401141 is an apocalyptic number.

It is an amenable number.

12512401141 is a deficient number, since it is larger than the sum of its proper divisors (1548491).

12512401141 is an equidigital number, since it uses as much as digits as its factorization.

12512401141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548490.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 12512401141 its reverse (14110421521), we get a palindrome (26622822662).

The spelling of 12512401141 in words is "twelve billion, five hundred twelve million, four hundred one thousand, one hundred forty-one".

Divisors: 1 8123 1540367 12512401141