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12204469747 = 19642340513
BaseRepresentation
bin10110101110111000…
…10110110111110011
31011111112212022010001
423113130112313303
5144443321012442
65335012050431
7611303165311
oct132734266763
934445768101
1012204469747
1151a3117838
122447303a17
1311c6625442
1483ac450b1
154b66ae2b7
hex2d7716df3

12204469747 has 4 divisors (see below), whose sum is σ = 12846810280. Its totient is φ = 11562129216.

The previous prime is 12204469733. The next prime is 12204469751. The reversal of 12204469747 is 74796440221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74796440221 = 259099288679.

It is a cyclic number.

It is not a de Polignac number, because 12204469747 - 211 = 12204467699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12204469697 and 12204469706.

It is not an unprimeable number, because it can be changed into a prime (12204469787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321170238 + ... + 321170275.

It is an arithmetic number, because the mean of its divisors is an integer number (3211702570).

Almost surely, 212204469747 is an apocalyptic number.

12204469747 is a deficient number, since it is larger than the sum of its proper divisors (642340533).

12204469747 is an equidigital number, since it uses as much as digits as its factorization.

12204469747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642340532.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 12204469747 in words is "twelve billion, two hundred four million, four hundred sixty-nine thousand, seven hundred forty-seven".

Divisors: 1 19 642340513 12204469747