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69795028085 = 513959005617
BaseRepresentation
bin100000100000000011…
…0111001110001110101
320200011010122210021012
41001000012321301311
52120420011344320
652021405402005
75020404643616
oct1010006716165
9220133583235
1069795028085
11276665236a2
121163a269305
136773b3c2b3
1435416dbc0d
151c376234c5
hex10401b9c75

69795028085 has 4 divisors (see below), whose sum is σ = 83754033708. Its totient is φ = 55836022464.

The previous prime is 69795028081. The next prime is 69795028087. The reversal of 69795028085 is 58082059796.

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 18237422116 + 51557605969 = 135046^2 + 227063^2 .

It is a cyclic number.

It is not a de Polignac number, because 69795028085 - 22 = 69795028081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69795028081) 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, 6979502804 + ... + 6979502813.

It is an arithmetic number, because the mean of its divisors is an integer number (20938508427).

Almost surely, 269795028085 is an apocalyptic number.

It is an amenable number.

69795028085 is a deficient number, since it is larger than the sum of its proper divisors (13959005623).

69795028085 is a wasteful number, since it uses less digits than its factorization.

69795028085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13959005622.

The product of its (nonzero) digits is 10886400, while the sum is 59.

The spelling of 69795028085 in words is "sixty-nine billion, seven hundred ninety-five million, twenty-eight thousand, eighty-five".

Divisors: 1 5 13959005617 69795028085