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12385246291 = 112557440333
BaseRepresentation
bin10111000100011011…
…11101110001010011
31011222011000200220121
423202031331301103
5200331110340131
65404550451111
7615626566525
oct134215756123
934864020817
1012385246291
11528616a940
122497963a97
131224c0b902
14856c61a15
154c74bc911
hex2e237dc53

12385246291 has 8 divisors (see below), whose sum is σ = 13516492464. Its totient is φ = 11254885920.

The previous prime is 12385246259. The next prime is 12385246297. The reversal of 12385246291 is 19264258321.

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 12385246291 - 25 = 12385246259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12385246297) 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, 192040 + ... + 248293.

It is an arithmetic number, because the mean of its divisors is an integer number (1689561558).

Almost surely, 212385246291 is an apocalyptic number.

12385246291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12385246291 is a deficient number, since it is larger than the sum of its proper divisors (1131246173).

12385246291 is a wasteful number, since it uses less digits than its factorization.

12385246291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442901.

The product of its digits is 207360, while the sum is 43.

The spelling of 12385246291 in words is "twelve billion, three hundred eighty-five million, two hundred forty-six thousand, two hundred ninety-one".

Divisors: 1 11 2557 28127 440333 4843663 1125931481 12385246291