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18127380440679 = 315233967472191
BaseRepresentation
bin1000001111100100111000…
…00100100110011001100111
32101011221221022101111110220
410013302130010212121213
54333444333343100204
6102315334214015423
73550442246264646
oct407623404463147
971157838344426
1018127380440679
115859862751724
12204925b047573
13a16534cc35b3
14469526dc335d
15216804c761d9
hex107c9c126667

18127380440679 has 8 divisors (see below), whose sum is σ = 24185710482432. Its totient is φ = 12076985346360.

The previous prime is 18127380440677. The next prime is 18127380440759. The reversal of 18127380440679 is 97604408372181.

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

It is not a de Polignac number, because 18127380440679 - 21 = 18127380440677 is a prime.

It is a super-2 number, since 2×181273804406792 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18127380440671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1983731527 + ... + 1983740664.

It is an arithmetic number, because the mean of its divisors is an integer number (3023213810304).

Almost surely, 218127380440679 is an apocalyptic number.

18127380440679 is a deficient number, since it is larger than the sum of its proper divisors (6058330041753).

18127380440679 is a wasteful number, since it uses less digits than its factorization.

18127380440679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967473717.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 18127380440679 in words is "eighteen trillion, one hundred twenty-seven billion, three hundred eighty million, four hundred forty thousand, six hundred seventy-nine".

Divisors: 1 3 1523 4569 3967472191 11902416573 6042460146893 18127380440679