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68028360611 = 426115965351
BaseRepresentation
bin111111010110110011…
…100110011110100011
320111121000100210002112
4333112303212132203
52103310230014421
651130215505535
74625543344601
oct772663463643
9214530323075
1068028360611
112693a266232
12112266882ab
136551b20023
143414c20871
151b824a145b
hexfd6ce67a3

68028360611 has 4 divisors (see below), whose sum is σ = 68044330224. Its totient is φ = 68012391000.

The previous prime is 68028360581. The next prime is 68028360677. The reversal of 68028360611 is 11606382086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68028360611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68028360011) 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 3 ways as a sum of consecutive naturals, for example, 7978415 + ... + 7986936.

It is an arithmetic number, because the mean of its divisors is an integer number (17011082556).

Almost surely, 268028360611 is an apocalyptic number.

68028360611 is a deficient number, since it is larger than the sum of its proper divisors (15969613).

68028360611 is a wasteful number, since it uses less digits than its factorization.

68028360611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15969612.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 68028360611 in words is "sixty-eight billion, twenty-eight million, three hundred sixty thousand, six hundred eleven".

Divisors: 1 4261 15965351 68028360611