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13260061263 = 34420020421
BaseRepresentation
bin11000101100101110…
…00111101001001111
31021020010010220110010
430112113013221033
5204124033430023
610031441044303
7646411442511
oct142627075117
937203126403
1013260061263
115694a60319
1226a0926693
131334227ac7
148db103bb1
155291c2093
hex3165c7a4f

13260061263 has 4 divisors (see below), whose sum is σ = 17680081688. Its totient is φ = 8840040840.

The previous prime is 13260061153. The next prime is 13260061271. The reversal of 13260061263 is 36216006231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36216006231 = 312072002077.

It is a de Polignac number, because none of the positive numbers 2k-13260061263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13260061263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13260071263) 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 3 ways as a sum of consecutive naturals, for example, 2210010208 + ... + 2210010213.

It is an arithmetic number, because the mean of its divisors is an integer number (4420020422).

Almost surely, 213260061263 is an apocalyptic number.

13260061263 is a deficient number, since it is larger than the sum of its proper divisors (4420020425).

13260061263 is an equidigital number, since it uses as much as digits as its factorization.

13260061263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420020424.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 13260061263 its reverse (36216006231), we get a palindrome (49476067494).

The spelling of 13260061263 in words is "thirteen billion, two hundred sixty million, sixty-one thousand, two hundred sixty-three".

Divisors: 1 3 4420020421 13260061263