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68287562998 = 2594791208159
BaseRepresentation
bin111111100110010000…
…011000010011110110
320112021002002121220221
4333212100120103312
52104323104003443
651212035244554
74635141464644
oct774620302366
9215232077827
1068287562998
1126a62604886
121129944975a
136593735215
14343b414194
151b9a101eed
hexfe64184f6

68287562998 has 16 divisors (see below), whose sum is σ = 104385024000. Its totient is φ = 33494972392.

The previous prime is 68287562983. The next prime is 68287562999. The reversal of 68287562998 is 89926578286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68287562999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547558 + ... + 660601.

It is an arithmetic number, because the mean of its divisors is an integer number (6524064000).

Almost surely, 268287562998 is an apocalyptic number.

68287562998 is a deficient number, since it is larger than the sum of its proper divisors (36097461002).

68287562998 is a wasteful number, since it uses less digits than its factorization.

68287562998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208699.

The product of its digits is 209018880, while the sum is 70.

The spelling of 68287562998 in words is "sixty-eight billion, two hundred eighty-seven million, five hundred sixty-two thousand, nine hundred ninety-eight".

Divisors: 1 2 59 118 479 958 28261 56522 1208159 2416318 71281381 142562762 578708161 1157416322 34143781499 68287562998