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12681605083 = 722929273049
BaseRepresentation
bin10111100111110000…
…11110111111011011
31012201210200021202011
423303320132333123
5201432442330313
65454214450351
7626155602400
oct136370367733
935653607664
1012681605083
115418487664
12255b0639b7
131271433244
148843682a7
154e350c93d
hex2f3e1efdb

12681605083 has 24 divisors (see below), whose sum is σ = 15270984000. Its totient is φ = 10488094848.

The previous prime is 12681605077. The next prime is 12681605093. The reversal of 12681605083 is 38050618621.

It is not a de Polignac number, because 12681605083 - 225 = 12648050651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12681605033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4157743 + ... + 4160791.

It is an arithmetic number, because the mean of its divisors is an integer number (636291000).

Almost surely, 212681605083 is an apocalyptic number.

12681605083 is a deficient number, since it is larger than the sum of its proper divisors (2589378917).

12681605083 is a wasteful number, since it uses less digits than its factorization.

12681605083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019 (or 6012 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 12681605083 in words is "twelve billion, six hundred eighty-one million, six hundred five thousand, eighty-three".

Divisors: 1 7 29 49 203 1421 2927 3049 20489 21343 84883 88421 143423 149401 594181 618947 4159267 4332629 8924423 62470961 258808267 437296727 1811657869 12681605083