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168189759213 = 3722944977893
BaseRepresentation
bin1001110010100011100…
…1000000111011101101
3121002010102201000121020
42130220321000323231
510223423034243323
6205133150124353
715102620236140
oct2345071007355
9532112630536
10168189759213
1165368809503
122871a4b06b9
1312b24bbc9a8
1481d7496057
15459596cae3
hex2728e40eed

168189759213 has 32 divisors (see below), whose sum is σ = 257984928000. Its totient is φ = 95474405376.

The previous prime is 168189759211. The next prime is 168189759217. The reversal of 168189759213 is 312957981861.

168189759213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168189759213 - 21 = 168189759211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168189759211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2120295 + ... + 2198187.

It is an arithmetic number, because the mean of its divisors is an integer number (8062029000).

Almost surely, 2168189759213 is an apocalyptic number.

It is an amenable number.

168189759213 is a deficient number, since it is larger than the sum of its proper divisors (89795168787).

168189759213 is a wasteful number, since it uses less digits than its factorization.

168189759213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78581.

The product of its digits is 6531840, while the sum is 60.

The spelling of 168189759213 in words is "one hundred sixty-eight billion, one hundred eighty-nine million, seven hundred fifty-nine thousand, two hundred thirteen".

Divisors: 1 3 7 21 229 449 687 1347 1603 3143 4809 9429 77893 102821 233679 308463 545251 719747 1635753 2159241 17837497 34973957 53512491 104921871 124862479 244817699 374587437 734453097 8009036153 24027108459 56063253071 168189759213