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68466769886 = 223831672643
BaseRepresentation
bin111111110000111011…
…111111111111011110
320112201120022021120002
4333300323333333132
52110204443114021
651241520254302
74642445641004
oct776073777736
9215646267502
1068466769886
1127044785649
1211329471392
1365c18bc0b8
143457142a74
151baac0050b
hexff0efffde

68466769886 has 48 divisors (see below), whose sum is σ = 109279545984. Its totient is φ = 32106733296.

The previous prime is 68466769873. The next prime is 68466769937. The reversal of 68466769886 is 68896766486.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106479881 + ... + 106480523.

It is an arithmetic number, because the mean of its divisors is an integer number (2276657208).

Almost surely, 268466769886 is an apocalyptic number.

68466769886 is a deficient number, since it is larger than the sum of its proper divisors (40812776098).

68466769886 is a wasteful number, since it uses less digits than its factorization.

68466769886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 918 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 74.

The spelling of 68466769886 in words is "sixty-eight billion, four hundred sixty-six million, seven hundred sixty-nine thousand, eight hundred eighty-six".

Divisors: 1 2 23 46 83 166 167 334 643 1286 1909 3818 3841 7682 13861 14789 27722 27889 29578 53369 55778 106738 107381 214762 318803 637606 641447 1227487 1282894 2314787 2454974 2469763 4629574 4939526 8912623 17825246 17932627 35865254 53240101 106480202 204990329 409980658 412450421 824900842 1488408041 2976816082 34233384943 68466769886