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12387666414 = 2313963147863
BaseRepresentation
bin10111000100101110…
…01100100111101110
31011222022120122200210
423202113030213232
5200332220311124
65405114403250
7615656266344
oct134227144756
934868518623
1012387666414
115287573142
122498730526
131225578336
148572d1994
154c77e9a29
hex2e25cc9ee

12387666414 has 16 divisors (see below), whose sum is σ = 24777274752. Its totient is φ = 4128898488.

The previous prime is 12387666413. The next prime is 12387666427. The reversal of 12387666414 is 41466678321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387666413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9847 + ... + 157709.

It is an arithmetic number, because the mean of its divisors is an integer number (1548579672).

Almost surely, 212387666414 is an apocalyptic number.

12387666414 is an abundant number, since it is smaller than the sum of its proper divisors (12389608338).

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

12387666414 is a wasteful number, since it uses less digits than its factorization.

12387666414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161831.

The product of its digits is 1161216, while the sum is 48.

The spelling of 12387666414 in words is "twelve billion, three hundred eighty-seven million, six hundred sixty-six thousand, four hundred fourteen".

Divisors: 1 2 3 6 13963 27926 41889 83778 147863 295726 443589 887178 2064611069 4129222138 6193833207 12387666414