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549999999999 = 321922314423203
BaseRepresentation
bin10000000000011101000…
…11011111101111111111
31221120122110000212212100
420000032203133233333
533002344444444444
61100355544440143
754510340602162
oct10001643375777
91846573025770
10549999999999
111a228773054a
128a715a79053
133cb31bba7a8
141c897953ad9
15e4904c7e69
hex800e8dfbff

549999999999 has 24 divisors (see below), whose sum is σ = 840007400960. Its totient is φ = 345810691152.

The previous prime is 549999999959. The next prime is 550000000019. The reversal of 549999999999 is 999999999945.

It is not a de Polignac number, because 549999999999 - 211 = 549999997951 is a prime.

It is a super-9 number, since 9×5499999999999 (a number of 107 digits) contains 999999999 as substring.

549999999999 is a modest number, since divided by 999999 gives 549999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549999999959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7173469 + ... + 7249734.

Almost surely, 2549999999999 is an apocalyptic number.

549999999999 is a deficient number, since it is larger than the sum of its proper divisors (290007400961).

549999999999 is a wasteful number, since it uses less digits than its factorization.

549999999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14423451 (or 14423448 counting only the distinct ones).

The product of its digits is 69735688020, while the sum is 99.

The spelling of 549999999999 in words is "five hundred forty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".

Divisors: 1 3 9 19 57 171 223 669 2007 4237 12711 38133 14423203 43269609 129808827 274040857 822122571 2466367713 3216374269 9649122807 28947368421 61111111111 183333333333 549999999999