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12087903687 = 3311131150243
BaseRepresentation
bin10110100000111111…
…01100010111000111
31011012102112010112120
423100133230113013
5144224000404222
65315245421023
7605356325466
oct132037542707
934172463476
1012087903687
115143340a52
12241426a773
1311a8431542
148295809dd
154ab33615c
hex2d07ec5c7

12087903687 has 16 divisors (see below), whose sum is σ = 16784360448. Its totient is φ = 7729626240.

The previous prime is 12087903647. The next prime is 12087903697. The reversal of 12087903687 is 78630978021.

It is not a de Polignac number, because 12087903687 - 210 = 12087902663 is a prime.

It is a super-2 number, since 2×120879036872 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12087903617) 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 15 ways as a sum of consecutive naturals, for example, 564613 + ... + 585630.

It is an arithmetic number, because the mean of its divisors is an integer number (1049022528).

Almost surely, 212087903687 is an apocalyptic number.

12087903687 is a deficient number, since it is larger than the sum of its proper divisors (4696456761).

12087903687 is a wasteful number, since it uses less digits than its factorization.

12087903687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150390.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 12087903687 in words is "twelve billion, eighty-seven million, nine hundred three thousand, six hundred eighty-seven".

Divisors: 1 3 31 93 113 339 3503 10509 1150243 3450729 35657533 106972599 129977459 389932377 4029301229 12087903687