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68965585905 = 3523434648843
BaseRepresentation
bin100000000111010101…
…0110101001111110001
320121000022220202111110
41000032222311033301
52112220142222110
651403215503533
74661013544056
oct1001652651761
9217008822443
1068965585905
1127280303497
1211448527ba9
13667104b2c8
1434a34ab02d
151bd98d2a20
hex100eab53f1

68965585905 has 32 divisors (see below), whose sum is σ = 117820302336. Its totient is φ = 34364240064.

The previous prime is 68965585817. The next prime is 68965585921. The reversal of 68965585905 is 50958556986.

It is not a de Polignac number, because 68965585905 - 226 = 68898477041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2309587 + ... + 2339256.

It is an arithmetic number, because the mean of its divisors is an integer number (3681884448).

Almost surely, 268965585905 is an apocalyptic number.

It is an amenable number.

68965585905 is a deficient number, since it is larger than the sum of its proper divisors (48854716431).

68965585905 is a wasteful number, since it uses less digits than its factorization.

68965585905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648917.

The product of its (nonzero) digits is 116640000, while the sum is 66.

The spelling of 68965585905 in words is "sixty-eight billion, nine hundred sixty-five million, five hundred eighty-five thousand, nine hundred five".

Divisors: 1 3 5 15 23 43 69 115 129 215 345 645 989 2967 4945 14835 4648843 13946529 23244215 69732645 106923389 199900249 320770167 534616945 599700747 999501245 1603850835 2998503735 4597705727 13793117181 22988528635 68965585905