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91001466010121 is a prime number
BaseRepresentation
bin10100101100001111101110…
…000011100011101000001001
3102221012122200122001201202112
4110230033232003203220021
543411432000244310441
6521313255113512105
725111432106224652
oct2454175603435011
9387178618051675
1091001466010121
1126aa5561183167
12a25883aa12635
133ba152ac07484
1418686ccb02529
15a7c254b764eb
hex52c3ee0e3a09

91001466010121 has 2 divisors, whose sum is σ = 91001466010122. Its totient is φ = 91001466010120.

The previous prime is 91001466010087. The next prime is 91001466010199. The reversal of 91001466010121 is 12101066410019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85223620208896 + 5777845801225 = 9231664^2 + 2403715^2 .

It is a cyclic number.

It is not a de Polignac number, because 91001466010121 - 218 = 91001465747977 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 (91001466010921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45500733005060 + 45500733005061.

It is an arithmetic number, because the mean of its divisors is an integer number (45500733005061).

Almost surely, 291001466010121 is an apocalyptic number.

It is an amenable number.

91001466010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

91001466010121 is an equidigital number, since it uses as much as digits as its factorization.

91001466010121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 91001466010121 in words is "ninety-one trillion, one billion, four hundred sixty-six million, ten thousand, one hundred twenty-one".