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13213660147 = 16937804879
BaseRepresentation
bin11000100111001100…
…00111001111110011
31021002212211111002021
430103212013033303
5204030144111042
610023102332311
7645306154342
oct142346071763
937085744067
1013213660147
115670848496
12268928a097
13132772c81c
148d4ca5b59
155250a8867
hex3139873f3

13213660147 has 4 divisors (see below), whose sum is σ = 13221466720. Its totient is φ = 13205853576.

The previous prime is 13213660127. The next prime is 13213660153. The reversal of 13213660147 is 74106631231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74106631231 = 186739692893.

It is a cyclic number.

It is not a de Polignac number, because 13213660147 - 215 = 13213627379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13213660127) 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, 3900747 + ... + 3904132.

It is an arithmetic number, because the mean of its divisors is an integer number (3305366680).

Almost surely, 213213660147 is an apocalyptic number.

13213660147 is a deficient number, since it is larger than the sum of its proper divisors (7806573).

13213660147 is an equidigital number, since it uses as much as digits as its factorization.

13213660147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7806572.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 13213660147 in words is "thirteen billion, two hundred thirteen million, six hundred sixty thousand, one hundred forty-seven".

Divisors: 1 1693 7804879 13213660147