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12087968907 = 37282231081
BaseRepresentation
bin10110100000111111…
…11100010010001011
31011012102122110000010
423100133330102023
5144224010001112
65315251043003
7605360016600
oct132037742213
934172573003
1012087968907
115143385a53
1224142a0463
1311a8455131
1482959a6a7
154ab34a63c
hex2d07fc48b

12087968907 has 12 divisors (see below), whose sum is σ = 18748686696. Its totient is φ = 6907410720.

The previous prime is 12087968903. The next prime is 12087968953. The reversal of 12087968907 is 70986978021.

It is not a de Polignac number, because 12087968907 - 22 = 12087968903 is a prime.

It is a super-2 number, since 2×120879689072 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12087968903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41115394 + ... + 41115687.

It is an arithmetic number, because the mean of its divisors is an integer number (1562390558).

Almost surely, 212087968907 is an apocalyptic number.

12087968907 is a deficient number, since it is larger than the sum of its proper divisors (6660717789).

12087968907 is an equidigital number, since it uses as much as digits as its factorization.

12087968907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82231098 (or 82231091 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 12087968907 in words is "twelve billion, eighty-seven million, nine hundred sixty-eight thousand, nine hundred seven".

Divisors: 1 3 7 21 49 147 82231081 246693243 575617567 1726852701 4029322969 12087968907