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18079812457142 = 2311433393151767
BaseRepresentation
bin1000001110001100010001…
…10011001001001010110110
32101000102011012211120020212
410013012020303021022312
54332204423442112032
6102241430131025422
73544136415143132
oct407061063111266
971012135746225
1018079812457142
115840672879637
12203bba473b272
13a11bc406c287
144670d36883c2
1521546db7dbb2
hex107188cc92b6

18079812457142 has 32 divisors (see below), whose sum is σ = 28021751691264. Its totient is φ = 8739798724800.

The previous prime is 18079812457123. The next prime is 18079812457153. The reversal of 18079812457142 is 24175421897081.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349227743 + ... + 349279509.

It is an arithmetic number, because the mean of its divisors is an integer number (875679740352).

Almost surely, 218079812457142 is an apocalyptic number.

18079812457142 is a deficient number, since it is larger than the sum of its proper divisors (9941939234122).

18079812457142 is a wasteful number, since it uses less digits than its factorization.

18079812457142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57164.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 18079812457142 in words is "eighteen trillion, seventy-nine billion, eight hundred twelve million, four hundred fifty-seven thousand, one hundred forty-two".

Divisors: 1 2 31 62 1433 2866 3931 7862 44423 51767 88846 103534 121861 243722 1604777 3209554 5633123 11266246 74182111 148364222 174626813 203496077 349253626 406992154 2299645441 4599290882 6308378387 12616756774 291609878341 583219756682 9039906228571 18079812457142