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83131680600 = 23325246184267
BaseRepresentation
bin100110101101100001…
…0001100011101011000
321221120120220221011100
41031123002030131120
52330223202234400
6102105024231400
76002036424513
oct1153302143530
9257516827140
1083131680600
113228a737071
121414076b560
137ababa2a67
144048a5bd7a
1522683c4100
hex135b08c758

83131680600 has 72 divisors (see below), whose sum is σ = 279183900060. Its totient is φ = 22168447680.

The previous prime is 83131680587. The next prime is 83131680601. The reversal of 83131680600 is 608613138.

83131680600 is a `hidden beast` number, since 8 + 31 + 3 + 16 + 8 + 0 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83131680601) 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 17 ways as a sum of consecutive naturals, for example, 23090334 + ... + 23093933.

Almost surely, 283131680600 is an apocalyptic number.

It is an amenable number.

83131680600 is an abundant number, since it is smaller than the sum of its proper divisors (196052219460).

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

83131680600 is a wasteful number, since it uses less digits than its factorization.

83131680600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46184289 (or 46184277 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 83131680600 in words is "eighty-three billion, one hundred thirty-one million, six hundred eighty thousand, six hundred".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 30 36 40 45 50 60 72 75 90 100 120 150 180 200 225 300 360 450 600 900 1800 46184267 92368534 138552801 184737068 230921335 277105602 369474136 415658403 461842670 554211204 692764005 831316806 923685340 1108422408 1154606675 1385528010 1662633612 1847370680 2078292015 2309213350 2771056020 3325267224 3463820025 4156584030 4618426700 5542112040 6927640050 8313168060 9236853400 10391460075 13855280100 16626336120 20782920150 27710560200 41565840300 83131680600