215005205641 has 2 divisors, whose sum is σ = 215005205642. Its totient is φ = 215005205640.

The previous prime is 215005205581. The next prime is 215005205693. The reversal of 215005205641 is 146502500512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167231923600 + 47773282041 = 408940^2 + 218571^2 .

It is a cyclic number.

It is not a de Polignac number, because 215005205641 - 2²³ = 214996817033 is a prime.

It is not a weakly prime, because it can be changed into another prime (215005205141) 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, 107502602820 + 107502602821.

It is an arithmetic number, because the mean of its divisors is an integer number (107502602821).

Almost surely, 2^215005205641 is an apocalyptic number.

It is an amenable number.

215005205641 is a deficient number, since it is larger than the sum of its proper divisors (1).

215005205641 is an equidigital number, since it uses as much as digits as its factorization.

215005205641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 215005205641 in words is "two hundred fifteen billion, five million, two hundred five thousand, six hundred forty-one".