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12494690393 = 25168697247
BaseRepresentation
bin10111010001011110…
…11101100001011001
31012020202222000222212
423220233131201121
5201042120043033
65423500324505
7621426054533
oct135057354131
935222860885
1012494690393
115331a21909
122508543735
1312417aac33
148675d0853
154d1dda748
hex2e8bdd859

12494690393 has 8 divisors (see below), whose sum is σ = 12548027520. Its totient is φ = 12441382000.

The previous prime is 12494690387. The next prime is 12494690423. The reversal of 12494690393 is 39309649421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12494690393 is a prime.

It is a super-2 number, since 2×124946903932 (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 (12494690363) 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, 1720496 + ... + 1727742.

It is an arithmetic number, because the mean of its divisors is an integer number (1568503440).

Almost surely, 212494690393 is an apocalyptic number.

It is an amenable number.

12494690393 is a deficient number, since it is larger than the sum of its proper divisors (53337127).

12494690393 is an equidigital number, since it uses as much as digits as its factorization.

12494690393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14367.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 12494690393 in words is "twelve billion, four hundred ninety-four million, six hundred ninety thousand, three hundred ninety-three".

Divisors: 1 251 6869 7247 1724119 1818997 49779643 12494690393