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12819936371 = 111165448761
BaseRepresentation
bin10111111000010000…
…01011010001110011
31020002102222020121012
423330020023101303
5202223400430441
65520035421135
7632455442534
oct137410132163
936072866535
1012819936371
115489579a40
1225994547ab
131293ca7b88
1489889668b
155007349eb
hex2fc20b473

12819936371 has 4 divisors (see below), whose sum is σ = 13985385144. Its totient is φ = 11654487600.

The previous prime is 12819936347. The next prime is 12819936373. The reversal of 12819936371 is 17363991821.

12819936371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17363991821 = 111578544711.

It is a cyclic number.

It is not a de Polignac number, because 12819936371 - 218 = 12819674227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12819936373) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 582724370 + ... + 582724391.

It is an arithmetic number, because the mean of its divisors is an integer number (3496346286).

Almost surely, 212819936371 is an apocalyptic number.

12819936371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12819936371 is a deficient number, since it is larger than the sum of its proper divisors (1165448773).

12819936371 is a wasteful number, since it uses less digits than its factorization.

12819936371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165448772.

The product of its digits is 489888, while the sum is 50.

The spelling of 12819936371 in words is "twelve billion, eight hundred nineteen million, nine hundred thirty-six thousand, three hundred seventy-one".

Divisors: 1 11 1165448761 12819936371