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12919485108 = 2234639232081
BaseRepresentation
bin11000000100000111…
…11011001010110100
31020100101021211210110
430002003323022310
5202424342010413
65533553223020
7635104545225
oct140203731264
936311254713
1012919485108
11552a792422
122606861a70
1312ab7c115a
148a7bab24c
1550934a8c3
hex3020fb2b4

12919485108 has 24 divisors (see below), whose sum is σ = 30152093440. Its totient is φ = 4305548160.

The previous prime is 12919485077. The next prime is 12919485169. The reversal of 12919485108 is 80158491921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60373 + ... + 171708.

Almost surely, 212919485108 is an apocalyptic number.

It is an amenable number.

12919485108 is an abundant number, since it is smaller than the sum of its proper divisors (17232608332).

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

12919485108 is a wasteful number, since it uses less digits than its factorization.

12919485108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236727 (or 236725 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 48.

The spelling of 12919485108 in words is "twelve billion, nine hundred nineteen million, four hundred eighty-five thousand, one hundred eight".

Divisors: 1 2 3 4 6 12 4639 9278 13917 18556 27834 55668 232081 464162 696243 928324 1392486 2784972 1076623759 2153247518 3229871277 4306495036 6459742554 12919485108