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7839168085 = 572313771081
BaseRepresentation
bin1110100110100000…
…00011011001010101
3202020022202222222201
413103100003121111
5112023311334320
63333512324501
7365155554310
oct72320033125
922208688881
107839168085
113363008011
1216293a3731
1397c120ac8
1454519d977
1530d32b70a
hex1d3403655

7839168085 has 32 divisors (see below), whose sum is σ = 11300332032. Its totient is φ = 5104112640.

The previous prime is 7839168049. The next prime is 7839168107. The reversal of 7839168085 is 5808619387.

It is not a de Polignac number, because 7839168085 - 213 = 7839159893 is a prime.

It is a super-2 number, since 2×78391680852 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74745 + ... + 145825.

It is an arithmetic number, because the mean of its divisors is an integer number (353135376).

Almost surely, 27839168085 is an apocalyptic number.

It is an amenable number.

7839168085 is a deficient number, since it is larger than the sum of its proper divisors (3461163947).

7839168085 is a wasteful number, since it uses less digits than its factorization.

7839168085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71253.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 7839168085 is about 88539.0765989797. The cubic root of 7839168085 is about 1986.5065079882.

The spelling of 7839168085 in words is "seven billion, eight hundred thirty-nine million, one hundred sixty-eight thousand, eighty-five".

Divisors: 1 5 7 23 35 115 137 161 685 805 959 3151 4795 15755 22057 71081 110285 355405 497567 1634863 2487835 8174315 9738097 11444041 48690485 57220205 68166679 223976231 340833395 1119881155 1567833617 7839168085