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12123011080 = 235721941983
BaseRepresentation
bin10110100101001011…
…00111100000001000
31011021212120202211101
423102211213200020
5144311442323310
65322542111144
7606263615425
oct132245474010
934255522741
1012123011080
11516113a724
122423b7b4b4
1311b27a414b
148300bcd4c
154ae46d43a
hex2d2967808

12123011080 has 32 divisors (see below), whose sum is σ = 27281203200. Its totient is φ = 4848417216.

The previous prime is 12123011071. The next prime is 12123011081. The reversal of 12123011080 is 8011032121.

It is not an unprimeable number, because it can be changed into a prime (12123011081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267769 + ... + 309751.

It is an arithmetic number, because the mean of its divisors is an integer number (852537600).

Almost surely, 212123011080 is an apocalyptic number.

12123011080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123011080 is an abundant number, since it is smaller than the sum of its proper divisors (15158192120).

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

12123011080 is a wasteful number, since it uses less digits than its factorization.

12123011080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49213 (or 49209 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

The spelling of 12123011080 in words is "twelve billion, one hundred twenty-three million, eleven thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 7219 14438 28876 36095 41983 57752 72190 83966 144380 167932 209915 288760 335864 419830 839660 1679320 303075277 606150554 1212301108 1515376385 2424602216 3030752770 6061505540 12123011080