1215545334041 has 2 divisors, whose sum is σ = 1215545334042. Its totient is φ = 1215545334040.

The previous prime is 1215545333939. The next prime is 1215545334043. The reversal of 1215545334041 is 1404335455121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781639882816 + 433905451225 = 884104^2 + 658715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1215545334041 - 2¹⁰ = 1215545333017 is a prime.

Together with 1215545334043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1215545333986 and 1215545334004.

It is not a weakly prime, because it can be changed into another prime (1215545334043) 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, 607772667020 + 607772667021.

It is an arithmetic number, because the mean of its divisors is an integer number (607772667021).

Almost surely, 2^{1215545334041} is an apocalyptic number.

It is an amenable number.

1215545334041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215545334041 is an equidigital number, since it uses as much as digits as its factorization.

1215545334041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 1215545334041 in words is "one trillion, two hundred fifteen billion, five hundred forty-five million, three hundred thirty-four thousand, forty-one".