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68813884832 = 2571122538883
BaseRepresentation
bin100000000010110100…
…0001000110110100000
320120121202110112202012
41000011220020312200
52111412323303312
651340200212052
74654162240640
oct1000550106640
9216552415665
1068813884832
112720270a200
121140576a028
1366487a5064
14348b29c520
151bcb419322
hex1005a08da0

68813884832 has 72 divisors (see below), whose sum is σ = 170186472288. Its totient is φ = 26810593920.

The previous prime is 68813884831. The next prime is 68813884837. The reversal of 68813884832 is 23848831886.

It is not an unprimeable number, because it can be changed into a prime (68813884831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1242338 + ... + 1296545.

It is an arithmetic number, because the mean of its divisors is an integer number (2363701004).

Almost surely, 268813884832 is an apocalyptic number.

It is an amenable number.

68813884832 is an abundant number, since it is smaller than the sum of its proper divisors (101372587456).

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

68813884832 is a wasteful number, since it uses less digits than its factorization.

68813884832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538922 (or 2538903 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 59.

The spelling of 68813884832 in words is "sixty-eight billion, eight hundred thirteen million, eight hundred eighty-four thousand, eight hundred thirty-two".

Divisors: 1 2 4 7 8 11 14 16 22 28 32 44 56 77 88 112 121 154 176 224 242 308 352 484 616 847 968 1232 1694 1936 2464 3388 3872 6776 13552 27104 2538883 5077766 10155532 17772181 20311064 27927713 35544362 40622128 55855426 71088724 81244256 111710852 142177448 195493991 223421704 284354896 307204843 390987982 446843408 568709792 614409686 781975964 893686816 1228819372 1563951928 2150433901 2457638744 3127903856 4300867802 4915277488 6255807712 8601735604 9830554976 17203471208 34406942416 68813884832