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13120759271 = 83158081437
BaseRepresentation
bin11000011100000111…
…01110010111100111
31020212102000122001002
430032003232113213
5203332403244041
610005543223515
7643100420324
oct141603562747
936772018032
1013120759271
115623365704
122662147b9b
1313114033a9
148c6801b4b
1551bd5759b
hex30e0ee5e7

13120759271 has 4 divisors (see below), whose sum is σ = 13278840792. Its totient is φ = 12962677752.

The previous prime is 13120759243. The next prime is 13120759297. The reversal of 13120759271 is 17295702131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13120759271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120759241) 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, 79040636 + ... + 79040801.

It is an arithmetic number, because the mean of its divisors is an integer number (3319710198).

Almost surely, 213120759271 is an apocalyptic number.

13120759271 is a deficient number, since it is larger than the sum of its proper divisors (158081521).

13120759271 is an equidigital number, since it uses as much as digits as its factorization.

13120759271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158081520.

The product of its (nonzero) digits is 26460, while the sum is 38.

The spelling of 13120759271 in words is "thirteen billion, one hundred twenty million, seven hundred fifty-nine thousand, two hundred seventy-one".

Divisors: 1 83 158081437 13120759271