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68126554788 = 22354710378817
BaseRepresentation
bin111111011100101010…
…001011101010100100
320111211212010120011220
4333130222023222210
52104010344223123
651144044300340
74631145106155
oct773452135244
9214755116156
1068126554788
112698a733a46
12112535416b0
1365692808a6
143423ca192c
151b8adeace3
hexfdca8baa4

68126554788 has 24 divisors (see below), whose sum is σ = 159252583392. Its totient is φ = 22667334144.

The previous prime is 68126554739. The next prime is 68126554789. The reversal of 68126554788 is 88745562186.

It is not an unprimeable number, because it can be changed into a prime (68126554789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5182845 + ... + 5195972.

It is an arithmetic number, because the mean of its divisors is an integer number (6635524308).

Almost surely, 268126554788 is an apocalyptic number.

It is an amenable number.

68126554788 is an abundant number, since it is smaller than the sum of its proper divisors (91126028604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68126554788 is a wasteful number, since it uses less digits than its factorization.

68126554788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10379371 (or 10379369 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 60.

The spelling of 68126554788 in words is "sixty-eight billion, one hundred twenty-six million, five hundred fifty-four thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 12 547 1094 1641 2188 3282 6564 10378817 20757634 31136451 41515268 62272902 124545804 5677212899 11354425798 17031638697 22708851596 34063277394 68126554788