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68089587211 = 79861893509
BaseRepresentation
bin111111011010011101…
…001010011000001011
320111202021120102012101
4333122131022120023
52103421413242321
651140244054231
74630215641032
oct773235123013
9214667512171
1068089587211
1126970884728
1211243094377
136561709399
14341cddb719
151b87a47791
hexfda74a60b

68089587211 has 4 divisors (see below), whose sum is σ = 68951480800. Its totient is φ = 67227693624.

The previous prime is 68089587143. The next prime is 68089587221. The reversal of 68089587211 is 11278598086.

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

It is a cyclic number.

It is not a de Polignac number, because 68089587211 - 221 = 68087490059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68089587221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430946676 + ... + 430946833.

It is an arithmetic number, because the mean of its divisors is an integer number (17237870200).

Almost surely, 268089587211 is an apocalyptic number.

68089587211 is a deficient number, since it is larger than the sum of its proper divisors (861893589).

68089587211 is an equidigital number, since it uses as much as digits as its factorization.

68089587211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861893588.

The product of its (nonzero) digits is 1935360, while the sum is 55.

The spelling of 68089587211 in words is "sixty-eight billion, eighty-nine million, five hundred eighty-seven thousand, two hundred eleven".

Divisors: 1 79 861893509 68089587211