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72126286127 = 723251452773
BaseRepresentation
bin100001100101100001…
…1111100100100101111
320220011121022222002122
41003023003330210233
52140203312124002
653045004343155
75132233213400
oct1031303744457
9226147288078
1072126286127
1128652454335
1211b8ab44abb
136a55b09c1c
1436c31859a7
151d2211b6a2
hex10cb0fc92f

72126286127 has 12 divisors (see below), whose sum is σ = 83927999736. Its totient is φ = 61803378000.

The previous prime is 72126286091. The next prime is 72126286129. The reversal of 72126286127 is 72168262127.

It is not a de Polignac number, because 72126286127 - 212 = 72126282031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72126286129) 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 11 ways as a sum of consecutive naturals, for example, 67088 + ... + 385685.

It is an arithmetic number, because the mean of its divisors is an integer number (6993999978).

Almost surely, 272126286127 is an apocalyptic number.

72126286127 is a deficient number, since it is larger than the sum of its proper divisors (11801713609).

72126286127 is a wasteful number, since it uses less digits than its factorization.

72126286127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456038 (or 456031 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The spelling of 72126286127 in words is "seventy-two billion, one hundred twenty-six million, two hundred eighty-six thousand, one hundred twenty-seven".

Divisors: 1 7 49 3251 22757 159299 452773 3169411 22185877 1471965023 10303755161 72126286127