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12663331143 = 331479284269
BaseRepresentation
bin10111100101100101…
…10001100101000111
31012200112021212121120
423302302301211013
5201413303044033
65452323045023
7625544352531
oct136262614507
935615255546
1012663331143
115409136131
122554b10773
13126a705668
14881b6c851
154e1aed1b3
hex2f2cb1947

12663331143 has 16 divisors (see below), whose sum is σ = 17465548800. Its totient is φ = 8152806240.

The previous prime is 12663331061. The next prime is 12663331171. The reversal of 12663331143 is 34113336621.

It is not a de Polignac number, because 12663331143 - 28 = 12663330887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663331643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97588 + ... + 186681.

It is an arithmetic number, because the mean of its divisors is an integer number (1091596800).

Almost surely, 212663331143 is an apocalyptic number.

12663331143 is a deficient number, since it is larger than the sum of its proper divisors (4802217657).

12663331143 is a wasteful number, since it uses less digits than its factorization.

12663331143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284782.

The product of its digits is 23328, while the sum is 33.

Adding to 12663331143 its reverse (34113336621), we get a palindrome (46776667764).

The spelling of 12663331143 in words is "twelve billion, six hundred sixty-three million, three hundred thirty-one thousand, one hundred forty-three".

Divisors: 1 3 31 93 479 1437 14849 44547 284269 852807 8812339 26437017 136164851 408494553 4221110381 12663331143