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12444912851 = 78179217367
BaseRepresentation
bin10111001011100011…
…00100110011010011
31012010022022002001012
423211301210303103
5200441344202401
65414521401135
7620253004520
oct134561446323
935108262035
1012444912851
115306913248
1224b39391ab
13123439cb77
14860b54147
154cc8568bb
hex2e5c64cd3

12444912851 has 8 divisors (see below), whose sum is σ = 14224561920. Its totient is φ = 10665714888.

The previous prime is 12444912803. The next prime is 12444912853. The reversal of 12444912851 is 15821944421.

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 12444912851 - 26 = 12444912787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12444912799 and 12444912808.

It is not an unprimeable number, because it can be changed into a prime (12444912853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51431 + ... + 165936.

It is an arithmetic number, because the mean of its divisors is an integer number (1778070240).

Almost surely, 212444912851 is an apocalyptic number.

12444912851 is a deficient number, since it is larger than the sum of its proper divisors (1779649069).

12444912851 is an equidigital number, since it uses as much as digits as its factorization.

12444912851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225553.

The product of its digits is 92160, while the sum is 41.

The spelling of 12444912851 in words is "twelve billion, four hundred forty-four million, nine hundred twelve thousand, eight hundred fifty-one".

Divisors: 1 7 8179 57253 217367 1521569 1777844693 12444912851