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13105695827 = 71872242261
BaseRepresentation
bin11000011010010100…
…10000110001010011
31020211100200022212202
430031022100301103
5203320024231302
610004244313415
7642525401510
oct141512206123
936740608782
1013105695827
115615907284
1226590a286b
13130b25ac03
148c4800307
1551a87e202
hex30d290c53

13105695827 has 4 divisors (see below), whose sum is σ = 14977938096. Its totient is φ = 11233453560.

The previous prime is 13105695793. The next prime is 13105695829. The reversal of 13105695827 is 72859650131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72859650131 = 173421154047.

It is not a de Polignac number, because 13105695827 - 28 = 13105695571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13105695829) 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, 936121124 + ... + 936121137.

It is an arithmetic number, because the mean of its divisors is an integer number (3744484524).

Almost surely, 213105695827 is an apocalyptic number.

13105695827 is a deficient number, since it is larger than the sum of its proper divisors (1872242269).

13105695827 is an equidigital number, since it uses as much as digits as its factorization.

13105695827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872242268.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 13105695827 in words is "thirteen billion, one hundred five million, six hundred ninety-five thousand, eight hundred twenty-seven".

Divisors: 1 7 1872242261 13105695827