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111110000018 = 21723142084399
BaseRepresentation
bin110011101111010101…
…1000000110110010010
3101121210110001211010212
41213132223000312102
53310023130000033
6123013200524122
711012260263053
oct1473653006622
9347713054125
10111110000018
11431377755a6
121964a620642
13a62946c454
1455407a672a
152d547a6748
hex19deac0d92

111110000018 has 16 divisors (see below), whose sum is σ = 184141382400. Its totient is φ = 50013708096.

The previous prime is 111110000011. The next prime is 111110000051. The reversal of 111110000018 is 810000011111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111109999957 and 111110000011.

It is not an unprimeable number, because it can be changed into a prime (111110000011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 71041418 + ... + 71042981.

It is an arithmetic number, because the mean of its divisors is an integer number (11508836400).

Almost surely, 2111110000018 is an apocalyptic number.

111110000018 is a deficient number, since it is larger than the sum of its proper divisors (73031382382).

111110000018 is a wasteful number, since it uses less digits than its factorization.

111110000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142084441.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111110000018 its reverse (810000011111), we get a palindrome (921110011129).

The spelling of 111110000018 in words is "one hundred eleven billion, one hundred ten million, eighteen", and thus it is an aban number.

Divisors: 1 2 17 23 34 46 391 782 142084399 284168798 2415434783 3267941177 4830869566 6535882354 55555000009 111110000018