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68655550276 = 2277322204253
BaseRepresentation
bin111111111100001100…
…001000111101000100
320120012201112022120101
4333330030020331010
52111101310102101
651312342413444
74650230356105
oct777414107504
9216181468511
1068655550276
11271312a50a5
1211380731284
136621a48681
1434742443ac
151bbc590401
hexffc308f44

68655550276 has 12 divisors (see below), whose sum is σ = 120302648172. Its totient is φ = 34283365088.

The previous prime is 68655550219. The next prime is 68655550279. The reversal of 68655550276 is 67205555686.

It can be written as a sum of positive squares in 2 ways, for example, as 23445734400 + 45209815876 = 153120^2 + 212626^2 .

It is not an unprimeable number, because it can be changed into a prime (68655550279) 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 3 ways as a sum of consecutive naturals, for example, 11099035 + ... + 11105218.

It is an arithmetic number, because the mean of its divisors is an integer number (10025220681).

Almost surely, 268655550276 is an apocalyptic number.

It is an amenable number.

68655550276 is a deficient number, since it is larger than the sum of its proper divisors (51647097896).

68655550276 is a wasteful number, since it uses less digits than its factorization.

68655550276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22205030 (or 22205028 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 55.

The spelling of 68655550276 in words is "sixty-eight billion, six hundred fifty-five million, five hundred fifty thousand, two hundred seventy-six".

Divisors: 1 2 4 773 1546 3092 22204253 44408506 88817012 17163887569 34327775138 68655550276