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12108725412 = 2237331435503
BaseRepresentation
bin10110100011011110…
…00111110010100100
31011020212200222120120
423101233013302210
5144244313203122
65321312001540
7606031316310
oct132157076244
934225628516
1012108725412
115154072693
12241b2302b0
1311ac8419a4
1482c240b40
154ad09a75c
hex2d1bc7ca4

12108725412 has 48 divisors (see below), whose sum is σ = 32387561472. Its totient is φ = 3449175840.

The previous prime is 12108725411. The next prime is 12108725443. The reversal of 12108725412 is 21452780121.

It is a super-2 number, since 2×121087254122 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12108725411) 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, 189948 + ... + 245555.

It is an arithmetic number, because the mean of its divisors is an integer number (674740864).

Almost surely, 212108725412 is an apocalyptic number.

12108725412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12108725412 is an abundant number, since it is smaller than the sum of its proper divisors (20278836060).

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

12108725412 is a wasteful number, since it uses less digits than its factorization.

12108725412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435848 (or 435846 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The spelling of 12108725412 in words is "twelve billion, one hundred eight million, seven hundred twenty-five thousand, four hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 331 662 993 1324 1986 2317 3972 4634 6951 9268 13902 27804 435503 871006 1306509 1742012 2613018 3048521 5226036 6097042 9145563 12194084 18291126 36582252 144151493 288302986 432454479 576605972 864908958 1009060451 1729817916 2018120902 3027181353 4036241804 6054362706 12108725412