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8138066853 = 37255360999
BaseRepresentation
bin1111001010001000…
…10000101110100101
3210000011012122000110
413211010100232211
5113131321114403
63423311003233
7405445266300
oct74504205645
923004178013
108138066853
1134a67aa094
1216b1509519
139c9024597
14572b67b37
153296be103
hex1e5110ba5

8138066853 has 12 divisors (see below), whose sum is σ = 12622308000. Its totient is φ = 4650323832.

The previous prime is 8138066803. The next prime is 8138066879. The reversal of 8138066853 is 3586608318.

It is not a de Polignac number, because 8138066853 - 29 = 8138066341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138066803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27680353 + ... + 27680646.

It is an arithmetic number, because the mean of its divisors is an integer number (1051859000).

Almost surely, 28138066853 is an apocalyptic number.

It is an amenable number.

8138066853 is a deficient number, since it is larger than the sum of its proper divisors (4484241147).

8138066853 is a wasteful number, since it uses less digits than its factorization.

8138066853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55361016 (or 55361009 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 8138066853 is about 90211.2346274010. The cubic root of 8138066853 is about 2011.4400094092.

The spelling of 8138066853 in words is "eight billion, one hundred thirty-eight million, sixty-six thousand, eight hundred fifty-three".

Divisors: 1 3 7 21 49 147 55360999 166082997 387526993 1162580979 2712688951 8138066853