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68170970234880 = 2163651716787
BaseRepresentation
bin11111000000000010010100…
…11101110000000000000000
322221101002012010102202000000
433200001022131300000000
532413403121340004010
6400553151132000000
720234122123114152
oct1740011235600000
9287332163382000
1068170970234880
111a7a3167536317
12778bba8000000
132c066584147b6
1412b96c784cad2
157d343b6157c0
hex3e004a770000

68170970234880 has 952 divisors, whose sum is σ = 259746372341712. Its totient is φ = 17108557627392.

The previous prime is 68170970234821. The next prime is 68170970234911. The reversal of 68170970234880 is 8843207907186.

68170970234880 is a `hidden beast` number, since 6 + 81 + 7 + 0 + 9 + 70 + 2 + 3 + 488 + 0 = 666.

It is a super-2 number, since 2×681709702348802 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4060929847 + ... + 4060946633.

Almost surely, 268170970234880 is an apocalyptic number.

68170970234880 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 68170970234880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129873186170856).

68170970234880 is an abundant number, since it is smaller than the sum of its proper divisors (191575402106832).

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

68170970234880 is an frugal number, since it uses more digits than its factorization.

68170970234880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16859 (or 16814 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 68170970234880 in words is "sixty-eight trillion, one hundred seventy billion, nine hundred seventy million, two hundred thirty-four thousand, eight hundred eighty".