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12213812968 = 2371791218457
BaseRepresentation
bin10110101111111111…
…11111111011101000
31011112012102222121021
423113333333323220
5200003214003333
65335544222224
7611445461110
oct132777777350
934465388537
1012213812968
1151a8419505
12244a46a974
1311c8547086
1483c198040
154b740782d
hex2d7fffee8

12213812968 has 32 divisors (see below), whose sum is σ = 26318692800. Its totient is φ = 5205244032.

The previous prime is 12213812879. The next prime is 12213812969. The reversal of 12213812968 is 86921831221.

It is not an unprimeable number, because it can be changed into a prime (12213812969) 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, 599205 + ... + 619252.

It is an arithmetic number, because the mean of its divisors is an integer number (822459150).

Almost surely, 212213812968 is an apocalyptic number.

It is an amenable number.

12213812968 is an abundant number, since it is smaller than the sum of its proper divisors (14104879832).

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

12213812968 is a wasteful number, since it uses less digits than its factorization.

12213812968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218649 (or 1218645 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The spelling of 12213812968 in words is "twelve billion, two hundred thirteen million, eight hundred twelve thousand, nine hundred sixty-eight".

Divisors: 1 2 4 7 8 14 28 56 179 358 716 1253 1432 2506 5012 10024 1218457 2436914 4873828 8529199 9747656 17058398 34116796 68233592 218103803 436207606 872415212 1526726621 1744830424 3053453242 6106906484 12213812968