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12453312019 = 791012576073
BaseRepresentation
bin10111001100100011…
…00111011000010011
31012010220002210112111
423212101213120103
5201001021441034
65415421410151
7620414256061
oct134621473023
935126083474
1012453312019
11531062a705
1224b6709957
131236050ba5
14861cdd031
154cd465364
hex2e6467613

12453312019 has 16 divisors (see below), whose sum is σ = 12787470720. Its totient is φ = 12124569600.

The previous prime is 12453312017. The next prime is 12453312029. The reversal of 12453312019 is 91021335421.

12453312019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12453312019 - 21 = 12453312017 is a prime.

It is a super-2 number, since 2×124533120192 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12453312017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2047567 + ... + 2053639.

It is an arithmetic number, because the mean of its divisors is an integer number (799216920).

Almost surely, 212453312019 is an apocalyptic number.

12453312019 is a deficient number, since it is larger than the sum of its proper divisors (334158701).

12453312019 is a wasteful number, since it uses less digits than its factorization.

12453312019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6510.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 12453312019 in words is "twelve billion, four hundred fifty-three million, three hundred twelve thousand, nineteen".

Divisors: 1 79 101 257 6073 7979 20303 25957 479767 613373 1560761 2050603 48456467 123300119 157636861 12453312019