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78830818027 = 1354792911933
BaseRepresentation
bin100100101101010101…
…1101101001011101011
321112110212002110211221
41021122223231023223
52242421142134102
6100114150002511
75460333616543
oct1113253551353
9245425073757
1078830818027
1130482a3a395
1213340346437
137583b40a70
143b5b78c323
1520b5a1e637
hex125aaed2eb

78830818027 has 16 divisors (see below), whose sum is σ = 85148612640. Its totient is φ = 72549614592.

The previous prime is 78830818007. The next prime is 78830818051. The reversal of 78830818027 is 72081803887.

It is a happy number.

It is not a de Polignac number, because 78830818027 - 211 = 78830815979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78830818007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6600153 + ... + 6612085.

It is an arithmetic number, because the mean of its divisors is an integer number (5321788290).

Almost surely, 278830818027 is an apocalyptic number.

78830818027 is a deficient number, since it is larger than the sum of its proper divisors (6317794613).

78830818027 is a wasteful number, since it uses less digits than its factorization.

78830818027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13422.

The product of its (nonzero) digits is 1204224, while the sum is 52.

The spelling of 78830818027 in words is "seventy-eight billion, eight hundred thirty million, eight hundred eighteen thousand, twenty-seven".

Divisors: 1 13 547 929 7111 11933 12077 155129 508163 6527351 6606119 11085757 84855563 144114841 6063909079 78830818027