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8538540761 = 56315439829
BaseRepresentation
bin1111111001110111…
…11100101011011001
3211001001202210221102
413330323330223121
5114441331301021
63531134321145
7421410253562
oct77473745331
924031683842
108538540761
113691869063
1217a36591b5
13a60ca07aa
145b0013169
1534e92800b
hex1fcefcad9

8538540761 has 8 divisors (see below), whose sum is σ = 8560121280. Its totient is φ = 8516984112.

The previous prime is 8538540757. The next prime is 8538540763. The reversal of 8538540761 is 1670458358.

8538540761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8538540761 - 22 = 8538540757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8538540763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863795 + ... + 873623.

It is an arithmetic number, because the mean of its divisors is an integer number (1070015160).

Almost surely, 28538540761 is an apocalyptic number.

It is an amenable number.

8538540761 is a deficient number, since it is larger than the sum of its proper divisors (21580519).

8538540761 is a wasteful number, since it uses less digits than its factorization.

8538540761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11935.

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 8538540761 is about 92404.2248006010. The cubic root of 8538540761 is about 2043.9074123710.

The spelling of 8538540761 in words is "eight billion, five hundred thirty-eight million, five hundred forty thousand, seven hundred sixty-one".

Divisors: 1 563 1543 9829 868709 5533727 15166147 8538540761