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12685192301 = 91961137941
BaseRepresentation
bin10111101000001100…
…01010110001101101
31012202001102112111002
423310012022301231
5201434402123201
65454423410045
7626231232635
oct136406126155
935661375432
1012685192301
11541a507801
1225602b3925
1312720bac62
14884a1d6c5
154e39ba76b
hex2f418ac6d

12685192301 has 4 divisors (see below), whose sum is σ = 12685422204. Its totient is φ = 12684962400.

The previous prime is 12685192297. The next prime is 12685192313. The reversal of 12685192301 is 10329158621.

It is a happy number.

12685192301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5501782276 + 7183410025 = 74174^2 + 84755^2 .

It is a cyclic number.

It is not a de Polignac number, because 12685192301 - 22 = 12685192297 is a prime.

It is a deceptive number, since it divides R12685192300.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12685192391) 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 3 ways as a sum of consecutive naturals, for example, 22991 + ... + 160931.

It is an arithmetic number, because the mean of its divisors is an integer number (3171355551).

Almost surely, 212685192301 is an apocalyptic number.

12685192301 is the 91961-st pentagonal number.

It is an amenable number.

12685192301 is a deficient number, since it is larger than the sum of its proper divisors (229903).

12685192301 is an equidigital number, since it uses as much as digits as its factorization.

12685192301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229902.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 12685192301 in words is "twelve billion, six hundred eighty-five million, one hundred ninety-two thousand, three hundred one".

Divisors: 1 91961 137941 12685192301