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8109711742 = 211991371971
BaseRepresentation
bin1111000110110000…
…00110000101111110
3202221011212001010011
413203120012011332
5113102041233432
63420415133434
7404652261316
oct74330060576
922834761104
108109711742
1134917a2510
1216a3b1427a
139c31a7202
1456d0a6446
15326e6c847
hex1e360617e

8109711742 has 16 divisors (see below), whose sum is σ = 13283864064. Its totient is φ = 3682503000.

The previous prime is 8109711713. The next prime is 8109711769. The reversal of 8109711742 is 2471179018.

It is a junction number, because it is equal to n+sod(n) for n = 8109711695 and 8109711704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164184 + ... + 207787.

It is an arithmetic number, because the mean of its divisors is an integer number (830241504).

Almost surely, 28109711742 is an apocalyptic number.

8109711742 is a deficient number, since it is larger than the sum of its proper divisors (5174152322).

8109711742 is a wasteful number, since it uses less digits than its factorization.

8109711742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372975.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 8109711742 is about 90053.9379594252. The cubic root of 8109711742 is about 2009.1011667270.

The spelling of 8109711742 in words is "eight billion, one hundred nine million, seven hundred eleven thousand, seven hundred forty-two".

Divisors: 1 2 11 22 991 1982 10901 21802 371971 743942 4091681 8183362 368623261 737246522 4054855871 8109711742