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87494261185 = 5191621568163
BaseRepresentation
bin101000101111100010…
…0000111100111000001
322100211121212222200001
41101133010013213001
52413142012324220
6104105545400001
76215121643402
oct1213704074701
9270747788601
1087494261185
1134119258471
1214b59799001
1383349639a6
1443401d59a9
1524213ba80a
hex145f1079c1

87494261185 has 16 divisors (see below), whose sum is σ = 110587440960. Its totient is φ = 66270415680.

The previous prime is 87494261159. The next prime is 87494261237. The reversal of 87494261185 is 58116249478.

It is not a de Polignac number, because 87494261185 - 233 = 78904326593 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 130087 + ... + 438076.

It is an arithmetic number, because the mean of its divisors is an integer number (6911715060).

Almost surely, 287494261185 is an apocalyptic number.

It is an amenable number.

87494261185 is a deficient number, since it is larger than the sum of its proper divisors (23093179775).

87494261185 is a wasteful number, since it uses less digits than its factorization.

87494261185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569808.

The product of its digits is 3870720, while the sum is 55.

The spelling of 87494261185 in words is "eighty-seven billion, four hundred ninety-four million, two hundred sixty-one thousand, one hundred eighty-five".

Divisors: 1 5 19 95 1621 8105 30799 153995 568163 2840815 10795097 53975485 920992223 4604961115 17498852237 87494261185