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12118968620 = 2251182966449
BaseRepresentation
bin10110100100101100…
…01100100100101100
31011021120222101121122
423102112030210230
5144304423443440
65322315320112
7606214351013
oct132226144454
934246871548
1012118968620
115159929550
122422750038
1311b19ba165
1482d749a7a
154ade207b5
hex2d258c92c

12118968620 has 48 divisors (see below), whose sum is σ = 27797364000. Its totient is φ = 4401515520.

The previous prime is 12118968583. The next prime is 12118968647. The reversal of 12118968620 is 2686981121.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149156 + ... + 215604.

It is an arithmetic number, because the mean of its divisors is an integer number (579111750).

Almost surely, 212118968620 is an apocalyptic number.

12118968620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12118968620 is an abundant number, since it is smaller than the sum of its proper divisors (15678395380).

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

12118968620 is a wasteful number, since it uses less digits than its factorization.

12118968620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67298 (or 67296 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 12118968620 in words is "twelve billion, one hundred eighteen million, nine hundred sixty-eight thousand, six hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 829 1658 3316 4145 8290 9119 16580 18238 36476 45595 66449 91190 132898 182380 265796 332245 664490 730939 1328980 1461878 2923756 3654695 7309390 14618780 55086221 110172442 220344884 275431105 550862210 605948431 1101724420 1211896862 2423793724 3029742155 6059484310 12118968620