1545220433213 has 2 divisors, whose sum is σ = 1545220433214. Its totient is φ = 1545220433212.

The previous prime is 1545220433191. The next prime is 1545220433219. The reversal of 1545220433213 is 3123340225451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1346962184569 + 198258248644 = 1160587^2 + 445262^2 .

It is an emirp because it is prime and its reverse (3123340225451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1545220433213 - 2²⁴ = 1545203655997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545220433219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772610216606 + 772610216607.

It is an arithmetic number, because the mean of its divisors is an integer number (772610216607).

Almost surely, 2^{1545220433213} is an apocalyptic number.

It is an amenable number.

1545220433213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545220433213 is an equidigital number, since it uses as much as digits as its factorization.

1545220433213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 1545220433213 its reverse (3123340225451), we get a palindrome (4668560658664).

The spelling of 1545220433213 in words is "one trillion, five hundred forty-five billion, two hundred twenty million, four hundred thirty-three thousand, two hundred thirteen".