145520343553213 has 2 divisors, whose sum is σ = 145520343553214. Its totient is φ = 145520343553212.

The previous prime is 145520343553127. The next prime is 145520343553217. The reversal of 145520343553213 is 312355343025541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111440177849529 + 34080165703684 = 10556523^2 + 5837822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145520343553213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145520343553217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72760171776606 + 72760171776607.

It is an arithmetic number, because the mean of its divisors is an integer number (72760171776607).

Almost surely, 2^{145520343553213} is an apocalyptic number.

It is an amenable number.

145520343553213 is a deficient number, since it is larger than the sum of its proper divisors (1).

145520343553213 is an equidigital number, since it uses as much as digits as its factorization.

145520343553213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240000, while the sum is 46.

Adding to 145520343553213 its reverse (312355343025541), we get a palindrome (457875686578754).

The spelling of 145520343553213 in words is "one hundred forty-five trillion, five hundred twenty billion, three hundred forty-three million, five hundred fifty-three thousand, two hundred thirteen".