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87690583141 = 743304195801
BaseRepresentation
bin101000110101011000…
…1000001110001100101
322101100022022011202121
41101222301001301211
52414042242130031
6104141241305541
76223024441540
oct1215261016145
9271308264677
1087690583141
113420a059017
1214bb34952b1
138366530b25
14435c2db857
15243374a011
hex146ac41c65

87690583141 has 16 divisors (see below), whose sum is σ = 102583248768. Its totient is φ = 73390464000.

The previous prime is 87690583103. The next prime is 87690583163. The reversal of 87690583141 is 14138509678.

It is not a de Polignac number, because 87690583141 - 211 = 87690581093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87690583171) 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, 867441 + ... + 963241.

It is an arithmetic number, because the mean of its divisors is an integer number (6411453048).

Almost surely, 287690583141 is an apocalyptic number.

It is an amenable number.

87690583141 is a deficient number, since it is larger than the sum of its proper divisors (14892665627).

87690583141 is a wasteful number, since it uses less digits than its factorization.

87690583141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98892.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 87690583141 in words is "eighty-seven billion, six hundred ninety million, five hundred eighty-three thousand, one hundred forty-one".

Divisors: 1 7 43 301 3041 21287 95801 130763 670607 915341 4119443 28836101 291330841 2039315887 12527226163 87690583141