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68673312402 = 23313131179589
BaseRepresentation
bin111111111101001111…
…111001011010010010
320120020221221201121220
4333331033321122102
52111120331444102
651314215225510
74650534344532
oct777517713222
9216227851556
1068673312402
1127140327042
1211386678296
1366256272c6
1434767494c2
151bbdded1bc
hexffd3f9692

68673312402 has 32 divisors (see below), whose sum is σ = 142230243840. Its totient is φ = 22081887360.

The previous prime is 68673312377. The next prime is 68673312403. The reversal of 68673312402 is 20421337686.

It is not an unprimeable number, because it can be changed into a prime (68673312403) 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, 531577 + ... + 648012.

It is an arithmetic number, because the mean of its divisors is an integer number (4444695120).

Almost surely, 268673312402 is an apocalyptic number.

68673312402 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

68673312402 is an abundant number, since it is smaller than the sum of its proper divisors (73556931438).

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

68673312402 is a wasteful number, since it uses less digits than its factorization.

68673312402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179938.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 68673312402 in words is "sixty-eight billion, six hundred seventy-three million, three hundred twelve thousand, four hundred two".

Divisors: 1 2 3 6 31 62 93 186 313 626 939 1878 9703 19406 29109 58218 1179589 2359178 3538767 7077534 36567259 73134518 109701777 219403554 369211357 738422714 1107634071 2215268142 11445552067 22891104134 34336656201 68673312402