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12819243823 = 160121113793
BaseRepresentation
bin10111111000001011…
…00010001100101111
31020002101200001121021
423330011202030233
5202223211300243
65520012515011
7632446526461
oct137405421457
936071601537
1012819243823
115489146691
12259917ba67
131293ac4899
14898756131
155006496ed
hex2fc16232f

12819243823 has 8 divisors (see below), whose sum is σ = 12836710656. Its totient is φ = 12801792000.

The previous prime is 12819243809. The next prime is 12819243863. The reversal of 12819243823 is 32834291821.

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 12819243823 - 225 = 12785689391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12819243823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12819243863) 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, 3377815 + ... + 3381607.

It is an arithmetic number, because the mean of its divisors is an integer number (1604588832).

Almost surely, 212819243823 is an apocalyptic number.

12819243823 is a deficient number, since it is larger than the sum of its proper divisors (17466833).

12819243823 is a wasteful number, since it uses less digits than its factorization.

12819243823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7505.

The product of its digits is 165888, while the sum is 43.

The spelling of 12819243823 in words is "twelve billion, eight hundred nineteen million, two hundred forty-three thousand, eight hundred twenty-three".

Divisors: 1 1601 2111 3793 3379711 6072593 8007023 12819243823