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68518124880 = 2435285492187
BaseRepresentation
bin111111110011111111…
…111001110101010000
320112212010221101100220
4333303333321311100
52110311114444010
651250553113040
74643641311012
oct776377716520
9215763841326
1068518124880
1127070771397
12113426b8780
1365cc43017a
14345dcb01b2
151bb0496970
hexff3ff9d50

68518124880 has 40 divisors (see below), whose sum is σ = 212406187872. Its totient is φ = 18271499904.

The previous prime is 68518124867. The next prime is 68518124893. The reversal of 68518124880 is 8842181586.

It is an interprime number because it is at equal distance from previous prime (68518124867) and next prime (68518124893).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142745854 + ... + 142746333.

Almost surely, 268518124880 is an apocalyptic number.

68518124880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68518124880 is an abundant number, since it is smaller than the sum of its proper divisors (143888062992).

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

68518124880 is a wasteful number, since it uses less digits than its factorization.

68518124880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285492203 (or 285492197 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 51.

The spelling of 68518124880 in words is "sixty-eight billion, five hundred eighteen million, one hundred twenty-four thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 285492187 570984374 856476561 1141968748 1427460935 1712953122 2283937496 2854921870 3425906244 4282382805 4567874992 5709843740 6851812488 8564765610 11419687480 13703624976 17129531220 22839374960 34259062440 68518124880