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12107854081 = 53397575441
BaseRepresentation
bin10110100011010111…
…10011000100000001
31011020211001201100001
423101223303010001
5144244102312311
65321241200001
7606021030061
oct132153630401
934224051301
1012107854081
115153627a84
12241aa90001
1311ac5c81cb
1482c0953a1
154ace774c1
hex2d1af3101

12107854081 has 8 divisors (see below), whose sum is σ = 12367399464. Its totient is φ = 11849460480.

The previous prime is 12107854069. The next prime is 12107854103. The reversal of 12107854081 is 18045870121.

It can be written as a sum of positive squares in 4 ways, for example, as 3573050625 + 8534803456 = 59775^2 + 92384^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12107854081 - 225 = 12074299649 is a prime.

It is a super-2 number, since 2×121078540812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12107854081.

It is not an unprimeable number, because it can be changed into a prime (12107854021) 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, 266680 + ... + 308761.

It is an arithmetic number, because the mean of its divisors is an integer number (1545924933).

Almost surely, 212107854081 is an apocalyptic number.

It is an amenable number.

12107854081 is a deficient number, since it is larger than the sum of its proper divisors (259545383).

12107854081 is an equidigital number, since it uses as much as digits as its factorization.

12107854081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575891.

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 12107854081 in words is "twelve billion, one hundred seven million, eight hundred fifty-four thousand, eighty-one".

Divisors: 1 53 397 21041 575441 30498373 228450077 12107854081