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68683179067968 = 26319163227508841
BaseRepresentation
bin11111001110111100011000…
…11111011000101001000000
3100000012001021211201102201210
433213132030133120221000
533000301122320133333
6402024341124530120
720316124130264223
oct1747361437305100
9300161254642653
1068683179067968
111a980411020813
127853315850940
132c42a46a54a5a
1412d63d82d15ba
157e1918ebaa63
hex3e778c7d8a40

68683179067968 has 224 divisors, whose sum is σ = 193310459850240. Its totient is φ = 21461356892160.

The previous prime is 68683179067879. The next prime is 68683179067973. The reversal of 68683179067968 is 86976097138686.

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, 134725228 + ... + 135234068.

Almost surely, 268683179067968 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 68683179067968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96655229925120).

68683179067968 is an abundant number, since it is smaller than the sum of its proper divisors (124627280782272).

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

68683179067968 is a wasteful number, since it uses less digits than its factorization.

68683179067968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509265 (or 509255 counting only the distinct ones).

The product of its (nonzero) digits is 7900913664, while the sum is 84.

The spelling of 68683179067968 in words is "sixty-eight trillion, six hundred eighty-three billion, one hundred seventy-nine million, sixty-seven thousand, nine hundred sixty-eight".