1215441043519 has 2 divisors, whose sum is σ = 1215441043520. Its totient is φ = 1215441043518.

The previous prime is 1215441043517. The next prime is 1215441043577. The reversal of 1215441043519 is 9153401445121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1215441043519 - 2¹ = 1215441043517 is a prime.

It is a super-2 number, since 2×1215441043519² (a number of 25 digits) contains 22 as substring.

Together with 1215441043517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215441043513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607720521759 + 607720521760.

It is an arithmetic number, because the mean of its divisors is an integer number (607720521760).

Almost surely, 2^{1215441043519} is an apocalyptic number.

1215441043519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215441043519 is an equidigital number, since it uses as much as digits as its factorization.

1215441043519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 1215441043519 in words is "one trillion, two hundred fifteen billion, four hundred forty-one million, forty-three thousand, five hundred nineteen".