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83091148057 = 128964461713
BaseRepresentation
bin100110101100010011…
…1100100110100011001
321221110202122122222001
41031120213210310121
52330132313214212
6102101015401001
76001035051031
oct1153047446431
9257422578861
1083091148057
11322698723a5
121412b083161
137ab26809c8
14404350a8c1
152264a69657
hex13589e4d19

83091148057 has 4 divisors (see below), whose sum is σ = 83155611060. Its totient is φ = 83026685056.

The previous prime is 83091148043. The next prime is 83091148067. The reversal of 83091148057 is 75084119038.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67049405721 + 16041742336 = 258939^2 + 126656^2 .

It is a cyclic number.

It is not a de Polignac number, because 83091148057 - 219 = 83090623769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83091147998 and 83091148016.

It is not an unprimeable number, because it can be changed into a prime (83091148067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32229568 + ... + 32232145.

It is an arithmetic number, because the mean of its divisors is an integer number (20788902765).

Almost surely, 283091148057 is an apocalyptic number.

It is an amenable number.

83091148057 is a deficient number, since it is larger than the sum of its proper divisors (64463003).

83091148057 is a wasteful number, since it uses less digits than its factorization.

83091148057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64463002.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 83091148057 in words is "eighty-three billion, ninety-one million, one hundred forty-eight thousand, fifty-seven".

Divisors: 1 1289 64461713 83091148057