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12112178080 = 255431760491
BaseRepresentation
bin10110100011111000…
…10010101110100000
31011021010012101202011
423101330102232200
5144301204144310
65321514002304
7606102546352
oct132174225640
934233171664
1012112178080
115156010732
122420416394
1311b04803a2
1482c89d0d2
154ad52d78a
hex2d1f12ba0

12112178080 has 48 divisors (see below), whose sum is σ = 29280502944. Its totient is φ = 4732197120.

The previous prime is 12112178069. The next prime is 12112178081. The reversal of 12112178080 is 8087121121.

It is not an unprimeable number, because it can be changed into a prime (12112178081) 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, 873366 + ... + 887125.

It is an arithmetic number, because the mean of its divisors is an integer number (610010478).

Almost surely, 212112178080 is an apocalyptic number.

12112178080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112178080 is an abundant number, since it is smaller than the sum of its proper divisors (17168324864).

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

12112178080 is a wasteful number, since it uses less digits than its factorization.

12112178080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760549 (or 1760541 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 31.

The spelling of 12112178080 in words is "twelve billion, one hundred twelve million, one hundred seventy-eight thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 43 80 86 160 172 215 344 430 688 860 1376 1720 3440 6880 1760491 3520982 7041964 8802455 14083928 17604910 28167856 35209820 56335712 70419640 75701113 140839280 151402226 281678560 302804452 378505565 605608904 757011130 1211217808 1514022260 2422435616 3028044520 6056089040 12112178080