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10128194161 is a prime number
BaseRepresentation
bin10010110111010111…
…11111101001110001
3222010211222120110021
421123223333221301
5131220304203121
64353002203441
7505662141601
oct113353775161
928124876407
1010128194161
1143281131a8
121b67ab3581
13c55422cc7
146c11b2c01
153e4281641
hex25baffa71

10128194161 has 2 divisors, whose sum is σ = 10128194162. Its totient is φ = 10128194160.

The previous prime is 10128194147. The next prime is 10128194183. The reversal of 10128194161 is 16149182101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9891495936 + 236698225 = 99456^2 + 15385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10128194161 is a prime.

It is not a weakly prime, because it can be changed into another prime (10128194101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064097080 + 5064097081.

It is an arithmetic number, because the mean of its divisors is an integer number (5064097081).

Almost surely, 210128194161 is an apocalyptic number.

It is an amenable number.

10128194161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10128194161 is an equidigital number, since it uses as much as digits as its factorization.

10128194161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 34.

The spelling of 10128194161 in words is "ten billion, one hundred twenty-eight million, one hundred ninety-four thousand, one hundred sixty-one".