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68608572835820 = 22516771932855761
BaseRepresentation
bin11111001100110001011011…
…00111001100011111101100
322222220220201101221011020112
433212120231213030133230
532443040324121221240
6401530202050235152
720310543251624303
oct1746305547143754
9288826641834215
1068608572835820
111a951806820316
127840974285ab8
132c389b721a564
1412d295ba3943a
157de9ee2d5665
hex3e662d9cc7ec

68608572835820 has 48 divisors (see below), whose sum is σ = 144960946498368. Its totient is φ = 27275295221760.

The previous prime is 68608572835799. The next prime is 68608572835823. The reversal of 68608572835820 is 2853827580686.

It is not an unprimeable number, because it can be changed into a prime (68608572835823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22596740 + ... + 25452500.

It is an arithmetic number, because the mean of its divisors is an integer number (3020019718716).

Almost surely, 268608572835820 is an apocalyptic number.

It is an amenable number.

68608572835820 is an abundant number, since it is smaller than the sum of its proper divisors (76352373662548).

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

68608572835820 is a wasteful number, since it uses less digits than its factorization.

68608572835820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863130 (or 2863128 counting only the distinct ones).

The product of its (nonzero) digits is 309657600, while the sum is 68.

The spelling of 68608572835820 in words is "sixty-eight trillion, six hundred eight billion, five hundred seventy-two million, eight hundred thirty-five thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 167 334 668 835 1670 3340 7193 14386 28772 35965 71930 143860 1201231 2402462 2855761 4804924 5711522 6006155 11423044 12012310 14278805 24024620 28557610 57115220 476912087 953824174 1907648348 2384560435 4769120870 9538241740 20541488873 41082977746 82165955492 102707444365 205414888730 410829777460 3430428641791 6860857283582 13721714567164 17152143208955 34304286417910 68608572835820