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12789307680 = 2535431075791
BaseRepresentation
bin10111110100100110…
…10101100100100000
31020000022100010221020
423322103111210200
5202143030321210
65513023125440
7631634215212
oct137223254440
936008303836
1012789307680
11547325a176
12258b143880
13128a8429a6
148947a25b2
154ecbd4770
hex2fa4d5920

12789307680 has 192 divisors, whose sum is σ = 41615659008. Its totient is φ = 3299466240.

The previous prime is 12789307679. The next prime is 12789307733. The reversal of 12789307680 is 8670398721.

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, 2205585 + ... + 2211375.

It is an arithmetic number, because the mean of its divisors is an integer number (216748224).

Almost surely, 212789307680 is an apocalyptic number.

12789307680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12789307680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20807829504).

12789307680 is an abundant number, since it is smaller than the sum of its proper divisors (28826351328).

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

12789307680 is a wasteful number, since it uses less digits than its factorization.

12789307680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959 (or 5951 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 12789307680 in words is "twelve billion, seven hundred eighty-nine million, three hundred seven thousand, six hundred eighty".