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50778205401061 is a prime number
BaseRepresentation
bin10111000101110101110001…
…11001010010111111100101
320122210100102102220122221101
423202322320321102333211
523123422231040313221
6255555104023520101
713460414160245305
oct1342727071227745
9218710372818841
1050778205401061
11151a7a09189046
1258411a62b9031
132244497276158
14c7796d1b9605
155d0cce897d91
hex2e2eb8e52fe5

50778205401061 has 2 divisors, whose sum is σ = 50778205401062. Its totient is φ = 50778205401060.

The previous prime is 50778205401047. The next prime is 50778205401067. The reversal of 50778205401061 is 16010450287705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41787239133025 + 8990966268036 = 6464305^2 + 2998494^2 .

It is a cyclic number.

It is not a de Polignac number, because 50778205401061 - 217 = 50778205269989 is a prime.

It is a super-2 number, since 2×507782054010612 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50778205401067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25389102700530 + 25389102700531.

It is an arithmetic number, because the mean of its divisors is an integer number (25389102700531).

Almost surely, 250778205401061 is an apocalyptic number.

It is an amenable number.

50778205401061 is a deficient number, since it is larger than the sum of its proper divisors (1).

50778205401061 is an equidigital number, since it uses as much as digits as its factorization.

50778205401061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 470400, while the sum is 46.

Adding to 50778205401061 its reverse (16010450287705), we get a palindrome (66788655688766).

The spelling of 50778205401061 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred one thousand, sixty-one".