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99999999999998 = 277142857142857
BaseRepresentation
bin10110101111001100010000…
…011110100011111111111110
3111010001220110221022112021122
4112233030100132203333332
5101101344444444444443
6552403211002430542
730030522136142240
oct2657142036437776
9433056427275248
1099999999999998
112995484200717a
12b270805802452
1343a4c62145c47
141a9a050c12090
15b863697be968
hex5af3107a3ffe

99999999999998 has 8 divisors (see below), whose sum is σ = 171428571428592. Its totient is φ = 42857142857136.

The previous prime is 99999999999973. The next prime is 100000000000031. The reversal of 99999999999998 is 89999999999999.

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

It is a super-9 number, since 9×999999999999989 (a number of 127 digits) contains 999999999 as substring.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571428571415 + ... + 3571428571442.

It is an arithmetic number, because the mean of its divisors is an integer number (21428571428574).

Almost surely, 299999999999998 is an apocalyptic number.

99999999999998 is a deficient number, since it is larger than the sum of its proper divisors (71428571428594).

99999999999998 is a wasteful number, since it uses less digits than its factorization.

99999999999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142857142866.

The product of its digits is 20334926626632, while the sum is 125.

Subtracting from 99999999999998 its reverse (89999999999999), we obtain a palindrome (9999999999999).

The spelling of 99999999999998 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".

Divisors: 1 2 7 14 7142857142857 14285714285714 49999999999999 99999999999998