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12271303660 = 2257117968379
BaseRepresentation
bin10110110110110110…
…10011101111101100
31011200012121211000011
423123123103233230
5200112423204120
65345400343004
7613044234340
oct133333235754
934605554004
1012271303660
115227916080
122465774a64
131207425b35
14845a81620
154bc4b1c5a
hex2db6d3bec

12271303660 has 48 divisors (see below), whose sum is σ = 32128508160. Its totient is φ = 3824821440.

The previous prime is 12271303637. The next prime is 12271303663. The reversal of 12271303660 is 6630317221.

It is not an unprimeable number, because it can be changed into a prime (12271303663) 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, 3982650 + ... + 3985729.

It is an arithmetic number, because the mean of its divisors is an integer number (669343920).

Almost surely, 212271303660 is an apocalyptic number.

12271303660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12271303660 is an abundant number, since it is smaller than the sum of its proper divisors (19857204500).

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

12271303660 is a wasteful number, since it uses less digits than its factorization.

12271303660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7968406 (or 7968404 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 12271303660 in words is "twelve billion, two hundred seventy-one million, three hundred three thousand, six hundred sixty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 7968379 15936758 31873516 39841895 55778653 79683790 87652169 111557306 159367580 175304338 223114612 278893265 350608676 438260845 557786530 613565183 876521690 1115573060 1227130366 1753043380 2454260732 3067825915 6135651830 12271303660