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BaseRepresentation
bin1001110110011111001111…
…11011010001110011110011
32211201000001101000011120121
410323033213323101303303
510314413131223300232
6114024011135551111
74364062344350401
oct473174773216363
984630041004517
1021663411150067
1169a2445915075
12251a62068b497
13c11b0a594c3b
1454c72c46c471
hex13b3e7ed1cf3

21663411150067 has 2 divisors, whose sum is σ = 21663411150068. Its totient is φ = 21663411150066.

The previous prime is 21663411149957. The next prime is 21663411150083. The reversal of 21663411150067 is 76005111436612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-21663411150067 is a prime.

It is not a weakly prime, because it can be changed into another prime (21663411153067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10831705575033 + 10831705575034.

It is an arithmetic number, because the mean of its divisors is an integer number (10831705575034).

Almost surely, 221663411150067 is an apocalyptic number.

21663411150067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21663411150067 is an equidigital number, since it uses as much as digits as its factorization.

21663411150067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

Adding to 21663411150067 its reverse (76005111436612), we get a palindrome (97668522586679).

The spelling of 21663411150067 in words is "twenty-one trillion, six hundred sixty-three billion, four hundred eleven million, one hundred fifty thousand, sixty-seven".