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89619693521 is a prime number
BaseRepresentation
bin101001101110110111…
…1111111111111010001
322120022202021010201012
41103131233333333101
52432020120143041
6105100513020305
76321600553211
oct1233557777721
9276282233635
1089619693521
1135009a87216
1215451554695
1385b30b7767
1444a25c2241
1524e7ca83eb
hex14ddbfffd1

89619693521 has 2 divisors, whose sum is σ = 89619693522. Its totient is φ = 89619693520.

The previous prime is 89619693481. The next prime is 89619693551. The reversal of 89619693521 is 12539691698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81065478400 + 8554215121 = 284720^2 + 92489^2 .

It is a cyclic number.

It is not a de Polignac number, because 89619693521 - 210 = 89619692497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89619693551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44809846760 + 44809846761.

It is an arithmetic number, because the mean of its divisors is an integer number (44809846761).

Almost surely, 289619693521 is an apocalyptic number.

It is an amenable number.

89619693521 is a deficient number, since it is larger than the sum of its proper divisors (1).

89619693521 is an equidigital number, since it uses as much as digits as its factorization.

89619693521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 59.

The spelling of 89619693521 in words is "eighty-nine billion, six hundred nineteen million, six hundred ninety-three thousand, five hundred twenty-one".