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21663411150229 is a prime number
BaseRepresentation
bin1001110110011111001111…
…11011010001110110010101
32211201000001101000011210121
410323033213323101312111
510314413131223301404
6114024011135551541
74364062344351022
oct473174773216625
984630041004717
1021663411150229
1169a2445915202
12251a62068b5b1
13c11b0a595034
1454c72c46c549
152787ad3c8e54
hex13b3e7ed1d95

21663411150229 has 2 divisors, whose sum is σ = 21663411150230. Its totient is φ = 21663411150228.

The previous prime is 21663411150217. The next prime is 21663411150299. The reversal of 21663411150229 is 92205111436612.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20326617335025 + 1336793815204 = 4508505^2 + 1156198^2 .

It is a cyclic number.

It is not a de Polignac number, because 21663411150229 - 215 = 21663411117461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21663411150299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10831705575114 + 10831705575115.

It is an arithmetic number, because the mean of its divisors is an integer number (10831705575115).

Almost surely, 221663411150229 is an apocalyptic number.

It is an amenable number.

21663411150229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21663411150229 is an equidigital number, since it uses as much as digits as its factorization.

21663411150229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 21663411150229 in words is "twenty-one trillion, six hundred sixty-three billion, four hundred eleven million, one hundred fifty thousand, two hundred twenty-nine".