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12513283321 = 7211198913729
BaseRepresentation
bin10111010011101100…
…11000110011111001
31012022001221122200211
423221312120303321
5201111400031241
65425403031121
7622043103400
oct135166306371
935261848624
1012513283321
115341470a70
12251280b4a1
1312455baa76
14869c70637
154d385e781
hex2e9d98cf9

12513283321 has 48 divisors (see below), whose sum is σ = 16904376000. Its totient is φ = 9132963840.

The previous prime is 12513283309. The next prime is 12513283351. The reversal of 12513283321 is 12338231521.

It is not a de Polignac number, because 12513283321 - 225 = 12479728889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12513283301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 904585 + ... + 918313.

It is an arithmetic number, because the mean of its divisors is an integer number (352174500).

Almost surely, 212513283321 is an apocalyptic number.

12513283321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12513283321 is a deficient number, since it is larger than the sum of its proper divisors (4391092679).

12513283321 is a wasteful number, since it uses less digits than its factorization.

12513283321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13862 (or 13855 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The spelling of 12513283321 in words is "twelve billion, five hundred thirteen million, two hundred eighty-three thousand, three hundred twenty-one".

Divisors: 1 7 11 19 49 77 89 133 209 539 623 931 979 1463 1691 4361 6853 10241 11837 13729 18601 47971 82859 96103 130207 151019 260851 672721 911449 1057133 1221881 1825957 2869361 7399931 8553167 12781699 13440691 20085527 23215739 59872169 94084837 140598689 162510173 255373129 658593859 1137571211 1787611903 12513283321