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12986807999 = 118913265381
BaseRepresentation
bin11000001100001001…
…01111011010111111
31020112001222012102212
430012010233122333
5203044110323444
65544400211035
7636553021664
oct140604573277
936461865385
1012986807999
115564795080
122625309a7b
1312bc733299
148b2ad3a6b
155101e819e
hex30612f6bf

12986807999 has 8 divisors (see below), whose sum is σ = 14326612560. Its totient is φ = 11673534400.

The previous prime is 12986807993. The next prime is 12986808049. The reversal of 12986807999 is 99970868921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12986807999 - 212 = 12986803903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12986807993) 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, 6631712 + ... + 6633669.

It is an arithmetic number, because the mean of its divisors is an integer number (1790826570).

Almost surely, 212986807999 is an apocalyptic number.

12986807999 is a deficient number, since it is larger than the sum of its proper divisors (1339804561).

12986807999 is a wasteful number, since it uses less digits than its factorization.

12986807999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13265481.

The product of its (nonzero) digits is 35271936, while the sum is 68.

The spelling of 12986807999 in words is "twelve billion, nine hundred eighty-six million, eight hundred seven thousand, nine hundred ninety-nine".

Divisors: 1 11 89 979 13265381 145919191 1180618909 12986807999