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68056409088 = 210334783631
BaseRepresentation
bin111111011000011110…
…100110010000000000
320111122222010210101000
4333120132212100000
52103334420042323
651133101012000
74626333634563
oct773036462000
9214588123330
1068056409088
1126954083498
1211233b54000
136557890965
1434188424da
151b84b91e43
hexfd87a6400

68056409088 has 352 divisors, whose sum is σ = 208648581120. Its totient is φ = 21900533760.

The previous prime is 68056409021. The next prime is 68056409129. The reversal of 68056409088 is 88090465086.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 107854533 + ... + 107855163.

Almost surely, 268056409088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68056409088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104324290560).

68056409088 is an abundant number, since it is smaller than the sum of its proper divisors (140592172032).

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

68056409088 is a wasteful number, since it uses less digits than its factorization.

68056409088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 68056409088 in words is "sixty-eight billion, fifty-six million, four hundred nine thousand, eighty-eight".