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68887678886 = 21310924307579
BaseRepresentation
bin100000000101000000…
…1101000111110100110
320120210220022200011022
41000022001220332212
52112040221211021
651351354011142
74656046415645
oct1001201507646
9216726280138
1068887678886
1127240331824
1211426416ab2
13665ab71790
143496dcb35c
151bd2b441ab
hex100a068fa6

68887678886 has 16 divisors (see below), whose sum is σ = 112301019600. Its totient is φ = 31502621088.

The previous prime is 68887678861. The next prime is 68887678897.

68887678886 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 68887678886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12150956 + ... + 12156623.

It is an arithmetic number, because the mean of its divisors is an integer number (7018813725).

Almost surely, 268887678886 is an apocalyptic number.

68887678886 is a deficient number, since it is larger than the sum of its proper divisors (43413340714).

68887678886 is a wasteful number, since it uses less digits than its factorization.

68887678886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24307703.

The product of its digits is 2774532096, while the sum is 80.

The spelling of 68887678886 in words is "sixty-eight billion, eight hundred eighty-seven million, six hundred seventy-eight thousand, eight hundred eighty-six".

Divisors: 1 2 13 26 109 218 1417 2834 24307579 48615158 315998527 631997054 2649526111 5299052222 34443839443 68887678886