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83771012125 = 531315115787
BaseRepresentation
bin100111000000100100…
…1000011010000011101
322000020010221100010201
41032001021003100131
52333030334342000
6102252303303501
76023631566023
oct1160111032035
9260203840121
1083771012125
1132588609329
121429a8aab91
137b9048cb38
1440a9922713
1522a45b096a
hex138124341d

83771012125 has 16 divisors (see below), whose sum is σ = 105344306496. Its totient is φ = 66505218000.

The previous prime is 83771012107. The next prime is 83771012131. The reversal of 83771012125 is 52121017738.

It is not a de Polignac number, because 83771012125 - 25 = 83771012093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2541519 + ... + 2574268.

It is an arithmetic number, because the mean of its divisors is an integer number (6584019156).

Almost surely, 283771012125 is an apocalyptic number.

It is an amenable number.

83771012125 is a deficient number, since it is larger than the sum of its proper divisors (21573294371).

83771012125 is a wasteful number, since it uses less digits than its factorization.

83771012125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115933 (or 5115923 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 83771012125 in words is "eighty-three billion, seven hundred seventy-one million, twelve thousand, one hundred twenty-five".

Divisors: 1 5 25 125 131 655 3275 16375 5115787 25578935 127894675 639473375 670168097 3350840485 16754202425 83771012125