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16872825311 = 29423573457
BaseRepresentation
bin11111011011011001…
…01110000111011111
31121112220012100000222
433231230232013133
5234023420402221
611430135111555
71135060435346
oct175554560737
947486170028
1016872825311
1171792a7431
12332a8125bb
13178b856904
14b60c56b5d
1568b4559ab
hex3edb2e1df

16872825311 has 4 divisors (see below), whose sum is σ = 16873428192. Its totient is φ = 16872222432.

The previous prime is 16872825287. The next prime is 16872825313. The reversal of 16872825311 is 11352827861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11352827861 = 21163536447.

It is a cyclic number.

It is not a de Polignac number, because 16872825311 - 222 = 16868631007 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 (16872825313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257306 + ... + 316151.

It is an arithmetic number, because the mean of its divisors is an integer number (4218357048).

Almost surely, 216872825311 is an apocalyptic number.

16872825311 is a deficient number, since it is larger than the sum of its proper divisors (602881).

16872825311 is an equidigital number, since it uses as much as digits as its factorization.

16872825311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602880.

The product of its digits is 161280, while the sum is 44.

The spelling of 16872825311 in words is "sixteen billion, eight hundred seventy-two million, eight hundred twenty-five thousand, three hundred eleven".

Divisors: 1 29423 573457 16872825311