1213534345519 has 2 divisors, whose sum is σ = 1213534345520. Its totient is φ = 1213534345518.

The previous prime is 1213534345501. The next prime is 1213534345531. The reversal of 1213534345519 is 9155434353121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213534345519 - 2⁵ = 1213534345487 is a prime.

It is a super-2 number, since 2×1213534345519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213534345549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606767172759 + 606767172760.

It is an arithmetic number, because the mean of its divisors is an integer number (606767172760).

Almost surely, 2^{1213534345519} is an apocalyptic number.

1213534345519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213534345519 is an equidigital number, since it uses as much as digits as its factorization.

1213534345519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972000, while the sum is 46.

The spelling of 1213534345519 in words is "one trillion, two hundred thirteen billion, five hundred thirty-four million, three hundred forty-five thousand, five hundred nineteen".