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680185152608 = 25133494684987
BaseRepresentation
bin10011110010111100011…
…00011100010001100000
32102000200021100212010012
421321132030130101200
542121004344340413
61240250040224052
7100066423255103
oct11713614342140
92360607325105
10680185152608
11242512871565
12ab9a876b028
134c1ab24b580
1424cc785873a
1512a5e7117a8
hex9e5e31c460

680185152608 has 48 divisors (see below), whose sum is σ = 1446255795600. Its totient is φ = 313032024576.

The previous prime is 680185152607. The next prime is 680185152613. The reversal of 680185152608 is 806251581086.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680185152607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2197310 + ... + 2487677.

It is an arithmetic number, because the mean of its divisors is an integer number (30130329075).

Almost surely, 2680185152608 is an apocalyptic number.

It is an amenable number.

680185152608 is an abundant number, since it is smaller than the sum of its proper divisors (766070642992).

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

680185152608 is a wasteful number, since it uses less digits than its factorization.

680185152608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685359 (or 4685351 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 50.

The spelling of 680185152608 in words is "six hundred eighty billion, one hundred eighty-five million, one hundred fifty-two thousand, six hundred eight".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 349 416 698 1396 2792 4537 5584 9074 11168 18148 36296 72592 145184 4684987 9369974 18739948 37479896 60904831 74959792 121809662 149919584 243619324 487238648 974477296 1635060463 1948954592 3270120926 6540241852 13080483704 21255786019 26160967408 42511572038 52321934816 85023144076 170046288152 340092576304 680185152608