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65554001969 is a prime number
BaseRepresentation
bin111101000011010100…
…101011000000110001
320021012120102100010212
4331003110223000301
52033223311030334
650040505433505
74510326552161
oct750324530061
9207176370125
1065554001969
112588a585a35
1210855a9b895
1362492ca9a1
14325c3665a1
151a8a13cece
hexf4352b031

65554001969 has 2 divisors, whose sum is σ = 65554001970. Its totient is φ = 65554001968.

The previous prime is 65554001959. The next prime is 65554002001. The reversal of 65554001969 is 96910045556.

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., 61414752400 + 4139249569 = 247820^2 + 64337^2 .

It is a cyclic number.

It is not a de Polignac number, because 65554001969 - 228 = 65285566513 is a prime.

It is a super-2 number, since 2×655540019692 (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65554001959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32777000984 + 32777000985.

It is an arithmetic number, because the mean of its divisors is an integer number (32777000985).

Almost surely, 265554001969 is an apocalyptic number.

It is an amenable number.

65554001969 is a deficient number, since it is larger than the sum of its proper divisors (1).

65554001969 is an equidigital number, since it uses as much as digits as its factorization.

65554001969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458000, while the sum is 50.

The spelling of 65554001969 in words is "sixty-five billion, five hundred fifty-four million, one thousand, nine hundred sixty-nine".