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68089415892 = 22319298637789
BaseRepresentation
bin111111011010011100…
…100000100011010100
320111202021020201012020
4333122130200203110
52103421342302032
651140240253140
74630214325411
oct773234404324
9214667221166
1068089415892
1126970777a43
12112430111b0
136561679404
14341cd95108
151b87a11b2c
hexfda7208d4

68089415892 has 24 divisors (see below), whose sum is σ = 167237162400. Its totient is φ = 21501920736.

The previous prime is 68089415881. The next prime is 68089415899. The reversal of 68089415892 is 29851498086.

68089415892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68089415899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149318667 + ... + 149319122.

It is an arithmetic number, because the mean of its divisors is an integer number (6968215100).

Almost surely, 268089415892 is an apocalyptic number.

It is an amenable number.

68089415892 is an abundant number, since it is smaller than the sum of its proper divisors (99147746508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68089415892 is a wasteful number, since it uses less digits than its factorization.

68089415892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298637815 (or 298637813 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 68089415892 in words is "sixty-eight billion, eighty-nine million, four hundred fifteen thousand, eight hundred ninety-two".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 298637789 597275578 895913367 1194551156 1791826734 3583653468 5674117991 11348235982 17022353973 22696471964 34044707946 68089415892