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78033230055 = 32511157642889
BaseRepresentation
bin100100010101100100…
…1001001100011100111
321110102021021210211200
41020223021021203213
52234303001330210
655503054533543
75431510340304
oct1105311114347
9243367253750
1078033230055
11301037a6780
12131592072b3
137487823a11
143ac38900ab
15206a9c20c0
hex122b2498e7

78033230055 has 24 divisors (see below), whose sum is σ = 147553745040. Its totient is φ = 37834293120.

The previous prime is 78033230003. The next prime is 78033230057. The reversal of 78033230055 is 55003233087.

It is not a de Polignac number, because 78033230055 - 233 = 69443295463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78033230057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78820950 + ... + 78821939.

It is an arithmetic number, because the mean of its divisors is an integer number (6148072710).

Almost surely, 278033230055 is an apocalyptic number.

78033230055 is a deficient number, since it is larger than the sum of its proper divisors (69520514985).

78033230055 is a wasteful number, since it uses less digits than its factorization.

78033230055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157642911 (or 157642908 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 78033230055 in words is "seventy-eight billion, thirty-three million, two hundred thirty thousand, fifty-five".

Divisors: 1 3 5 9 11 15 33 45 55 99 165 495 157642889 472928667 788214445 1418786001 1734071779 2364643335 5202215337 7093930005 8670358895 15606646011 26011076685 78033230055