199530515461 has 2 divisors, whose sum is σ = 199530515462. Its totient is φ = 199530515460.

The previous prime is 199530515453. The next prime is 199530515473. The reversal of 199530515461 is 164515035991.

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., 199345283361 + 185232100 = 446481^2 + 13610^2 .

It is an emirp because it is prime and its reverse (164515035991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199530515461 - 2³ = 199530515453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199530515441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99765257730 + 99765257731.

It is an arithmetic number, because the mean of its divisors is an integer number (99765257731).

Almost surely, 2^199530515461 is an apocalyptic number.

It is an amenable number.

199530515461 is a deficient number, since it is larger than the sum of its proper divisors (1).

199530515461 is an equidigital number, since it uses as much as digits as its factorization.

199530515461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729000, while the sum is 49.

The spelling of 199530515461 in words is "one hundred ninety-nine billion, five hundred thirty million, five hundred fifteen thousand, four hundred sixty-one".