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661452250163 is a prime number
BaseRepresentation
bin10011010000000011010…
…00000101110000110011
32100020022202002210221112
421220001220011300303
541314123234001123
61223511133143535
765534255234135
oct11500150056063
92306282083845
10661452250163
1123557a607701
12a823b02abab
134a4b422b803
142402b96b055
1512314d36d78
hex9a01a05c33

661452250163 has 2 divisors, whose sum is σ = 661452250164. Its totient is φ = 661452250162.

The previous prime is 661452250159. The next prime is 661452250187. The reversal of 661452250163 is 361052254166.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 661452250163 - 22 = 661452250159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 661452250163.

It is not a weakly prime, because it can be changed into another prime (661452258163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330726125081 + 330726125082.

It is an arithmetic number, because the mean of its divisors is an integer number (330726125082).

Almost surely, 2661452250163 is an apocalyptic number.

661452250163 is a deficient number, since it is larger than the sum of its proper divisors (1).

661452250163 is an equidigital number, since it uses as much as digits as its factorization.

661452250163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 661452250163 in words is "six hundred sixty-one billion, four hundred fifty-two million, two hundred fifty thousand, one hundred sixty-three".