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68440675260 = 223537475211259
BaseRepresentation
bin111111101111011000…
…011101001110111100
320112122202012112110110
4333233120131032330
52110131303102020
651235145110020
74642011066246
oct775730351674
9215582175413
1068440675260
1127030a82341
1211320788310
1365b93838a9
1434538ad096
151ba87988e0
hexfef61d3bc

68440675260 has 192 divisors, whose sum is σ = 201546455040. Its totient is φ = 17332623360.

The previous prime is 68440675231. The next prime is 68440675361. The reversal of 68440675260 is 6257604486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54360511 + ... + 54361769.

It is an arithmetic number, because the mean of its divisors is an integer number (1049721120).

Almost surely, 268440675260 is an apocalyptic number.

68440675260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68440675260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100773227520).

68440675260 is an abundant number, since it is smaller than the sum of its proper divisors (133105779780).

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

68440675260 is a wasteful number, since it uses less digits than its factorization.

68440675260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 68440675260 in words is "sixty-eight billion, four hundred forty million, six hundred seventy-five thousand, two hundred sixty".