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12686001101 = 41738534969
BaseRepresentation
bin10111101000010010…
…10000001111001101
31012202002221121221122
423310021100033031
5201440104013401
65454453010325
7626241141644
oct136411201715
935662847848
1012686001101
11541aa0a434
1225606239a5
131272312137
14884b9035b
154e3aca21b
hex2f42503cd

12686001101 has 16 divisors (see below), whose sum is σ = 13191533040. Its totient is φ = 12190279680.

The previous prime is 12686001067. The next prime is 12686001109. The reversal of 12686001101 is 10110068621.

It can be written as a sum of positive squares in 8 ways, for example, as 5007685225 + 7678315876 = 70765^2 + 87626^2 .

It is a cyclic number.

It is not a de Polignac number, because 12686001101 - 210 = 12686000077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686001109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2550545 + ... + 2555513.

It is an arithmetic number, because the mean of its divisors is an integer number (824470815).

Almost surely, 212686001101 is an apocalyptic number.

It is an amenable number.

12686001101 is a deficient number, since it is larger than the sum of its proper divisors (505531939).

12686001101 is an equidigital number, since it uses as much as digits as its factorization.

12686001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936.

The product of its (nonzero) digits is 576, while the sum is 26.

Adding to 12686001101 its reverse (10110068621), we get a palindrome (22796069722).

The spelling of 12686001101 in words is "twelve billion, six hundred eighty-six million, one thousand, one hundred one".

Divisors: 1 41 73 853 2993 4969 34973 62269 203729 362737 2553029 4238557 14872217 173780837 309414661 12686001101