1215143513351 has 2 divisors, whose sum is σ = 1215143513352. Its totient is φ = 1215143513350.

The previous prime is 1215143513317. The next prime is 1215143513359. The reversal of 1215143513351 is 1533153415121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1215143513351 - 2¹⁸ = 1215143251207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215143513359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607571756675 + 607571756676.

It is an arithmetic number, because the mean of its divisors is an integer number (607571756676).

Almost surely, 2^{1215143513351} is an apocalyptic number.

1215143513351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215143513351 is an equidigital number, since it uses as much as digits as its factorization.

1215143513351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 35.

Adding to 1215143513351 its reverse (1533153415121), we get a palindrome (2748296928472).

The spelling of 1215143513351 in words is "one trillion, two hundred fifteen billion, one hundred forty-three million, five hundred thirteen thousand, three hundred fifty-one".