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12512273041 = 31403621711
BaseRepresentation
bin10111010011100101…
…00010001010010001
31012022000001022212001
423221302202022101
5201111120214131
65425325234001
7622031365102
oct135162421221
935260038761
1012512273041
115340940a24
122512402901
131245325c78
14869a8a3a9
154d3710261
hex2e9ca2291

12512273041 has 4 divisors (see below), whose sum is σ = 12915894784. Its totient is φ = 12108651300.

The previous prime is 12512273023. The next prime is 12512273047. The reversal of 12512273041 is 14037221521.

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: 14037221521 = 17825718913.

It is a cyclic number.

It is not a de Polignac number, because 12512273041 - 25 = 12512273009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12512273047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201810825 + ... + 201810886.

It is an arithmetic number, because the mean of its divisors is an integer number (3228973696).

Almost surely, 212512273041 is an apocalyptic number.

It is an amenable number.

12512273041 is a deficient number, since it is larger than the sum of its proper divisors (403621743).

12512273041 is an equidigital number, since it uses as much as digits as its factorization.

12512273041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403621742.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 12512273041 its reverse (14037221521), we get a palindrome (26549494562).

The spelling of 12512273041 in words is "twelve billion, five hundred twelve million, two hundred seventy-three thousand, forty-one".

Divisors: 1 31 403621711 12512273041