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27281204113 = 123122161823
BaseRepresentation
bin11001011010000101…
…100010001110010001
32121102021101202120011
4121122011202032101
5421332442012423
620311030514521
71654024260142
oct313205421621
977367352504
1027281204113
111062a58a489
125354505a41
13275a02a337
14146b321ac9
15a9a0ceb0d
hex65a162391

27281204113 has 4 divisors (see below), whose sum is σ = 27303367168. Its totient is φ = 27259041060.

The previous prime is 27281204029. The next prime is 27281204123. The reversal of 27281204113 is 31140218272.

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 27281204113 - 229 = 26744333201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27281204123) 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, 11079681 + ... + 11082142.

It is an arithmetic number, because the mean of its divisors is an integer number (6825841792).

Almost surely, 227281204113 is an apocalyptic number.

It is an amenable number.

27281204113 is a deficient number, since it is larger than the sum of its proper divisors (22163055).

27281204113 is a wasteful number, since it uses less digits than its factorization.

27281204113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22163054.

The product of its (nonzero) digits is 5376, while the sum is 31.

The spelling of 27281204113 in words is "twenty-seven billion, two hundred eighty-one million, two hundred four thousand, one hundred thirteen".

Divisors: 1 1231 22161823 27281204113