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12819383808 = 293711283383
BaseRepresentation
bin10111111000001100…
…00100011000000000
31020002101221011121220
423330012010120000
5202223230240213
65520015515040
7632450651550
oct137406043000
936071834556
1012819383808
115489231880
122599228a80
131293b4350a
14898791160
15500675e23
hex2fc184600

12819383808 has 320 divisors, whose sum is σ = 42840686592. Its totient is φ = 3309281280.

The previous prime is 12819383791. The next prime is 12819383839. The reversal of 12819383808 is 80838391821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33470785 + ... + 33471167.

Almost surely, 212819383808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12819383808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21420343296).

12819383808 is an abundant number, since it is smaller than the sum of its proper divisors (30021302784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12819383808 is a wasteful number, since it uses less digits than its factorization.

12819383808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 12819383808 in words is "twelve billion, eight hundred nineteen million, three hundred eighty-three thousand, eight hundred eight".