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68517510682 = 2130859261799
BaseRepresentation
bin111111110011111101…
…100011111000011010
320112212002210011211211
4333303331203320122
52110310440320212
651250532013334
74643633142235
oct776375437032
9215762704754
1068517510682
1127070391995
121134246124a
1365cc27673a
14345db9041c
151bb03c49a7
hexff3f63e1a

68517510682 has 8 divisors (see below), whose sum is σ = 102777444000. Its totient is φ = 34258362684.

The previous prime is 68517510679. The next prime is 68517510697. The reversal of 68517510682 is 28601571586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130819 + ... + 392617.

It is an arithmetic number, because the mean of its divisors is an integer number (12847180500).

Almost surely, 268517510682 is an apocalyptic number.

68517510682 is a deficient number, since it is larger than the sum of its proper divisors (34259933318).

68517510682 is a wasteful number, since it uses less digits than its factorization.

68517510682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392660.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 68517510682 in words is "sixty-eight billion, five hundred seventeen million, five hundred ten thousand, six hundred eighty-two".

Divisors: 1 2 130859 261718 261799 523598 34258755341 68517510682