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12381722601 = 34127240867
BaseRepresentation
bin10111000100000001…
…00001011111101001
31011221220101200022120
423202000201133221
5200324210110401
65404343141453
7615554622423
oct134200413751
934856350276
1012381722601
1152841834a6
122496744889
131224276aa1
148565c5813
154c7023836
hex2e20217e9

12381722601 has 4 divisors (see below), whose sum is σ = 16508963472. Its totient is φ = 8254481732.

The previous prime is 12381722539. The next prime is 12381722611. The reversal of 12381722601 is 10622718321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12381722601 - 210 = 12381721577 is a prime.

It is a super-2 number, since 2×123817226012 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12381722611) 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, 2063620431 + ... + 2063620436.

It is an arithmetic number, because the mean of its divisors is an integer number (4127240868).

Almost surely, 212381722601 is an apocalyptic number.

It is an amenable number.

12381722601 is a deficient number, since it is larger than the sum of its proper divisors (4127240871).

12381722601 is an equidigital number, since it uses as much as digits as its factorization.

12381722601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127240870.

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 12381722601 in words is "twelve billion, three hundred eighty-one million, seven hundred twenty-two thousand, six hundred one".

Divisors: 1 3 4127240867 12381722601