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379871043656 = 231319317606443
BaseRepresentation
bin1011000011100100001…
…01000010000001001000
31100022111212101102220012
411201302011002001020
522210433441344111
6450302122451052
736305362411046
oct5416205020110
91308455342805
10379871043656
11137114334595
1261756063a88
1329a8b321ca0
1414558b0d396
159d346a848b
hex5872142048

379871043656 has 64 divisors (see below), whose sum is σ = 809966606400. Its totient is φ = 165573220608.

The previous prime is 379871043649. The next prime is 379871043679. The reversal of 379871043656 is 656340178973.

It is a junction number, because it is equal to n+sod(n) for n = 379871043595 and 379871043604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323171 + ... + 929613.

It is an arithmetic number, because the mean of its divisors is an integer number (12655728225).

Almost surely, 2379871043656 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 379871043656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404983303200).

379871043656 is an abundant number, since it is smaller than the sum of its proper divisors (430095562744).

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

379871043656 is a wasteful number, since it uses less digits than its factorization.

379871043656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606798 (or 606794 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 59.

The spelling of 379871043656 in words is "three hundred seventy-nine billion, eight hundred seventy-one million, forty-three thousand, six hundred fifty-six".

Divisors: 1 2 4 8 13 19 26 38 52 76 104 152 247 317 494 634 988 1268 1976 2536 4121 6023 8242 12046 16484 24092 32968 48184 78299 156598 313196 606443 626392 1212886 2425772 4851544 7883759 11522417 15767518 23044834 31535036 46089668 63070072 92179336 149791421 192242431 299582842 384484862 599165684 768969724 1198331368 1537939448 2499151603 3652606189 4998303206 7305212378 9996606412 14610424756 19993212824 29220849512 47483880457 94967760914 189935521828 379871043656