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68808527608 = 239788670783
BaseRepresentation
bin100000000010101001…
…1101100111011111000
320120121101101101000111
41000011103230323320
52111404440340413
651335445314104
74654065556132
oct1000523547370
9216541341014
1068808527608
11271aa690247
1211403a05934
13664764a7c2
14348a6a6052
151bcac0bd3d
hex10054ecef8

68808527608 has 16 divisors (see below), whose sum is σ = 130346052480. Its totient is φ = 34049580288.

The previous prime is 68808527603. The next prime is 68808527653. The reversal of 68808527608 is 80672580886.

It is a super-2 number, since 2×688085276082 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68808527603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44334616 + ... + 44336167.

It is an arithmetic number, because the mean of its divisors is an integer number (8146628280).

Almost surely, 268808527608 is an apocalyptic number.

It is an amenable number.

68808527608 is a deficient number, since it is larger than the sum of its proper divisors (61537524872).

68808527608 is a wasteful number, since it uses less digits than its factorization.

68808527608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88670886 (or 88670882 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 58.

The spelling of 68808527608 in words is "sixty-eight billion, eight hundred eight million, five hundred twenty-seven thousand, six hundred eight".

Divisors: 1 2 4 8 97 194 388 776 88670783 177341566 354683132 709366264 8601065951 17202131902 34404263804 68808527608