1320212851543 has 2 divisors, whose sum is σ = 1320212851544. Its totient is φ = 1320212851542.

The previous prime is 1320212851519. The next prime is 1320212851597. The reversal of 1320212851543 is 3451582120231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320212851543 - 2¹³ = 1320212843351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320212801543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660106425771 + 660106425772.

It is an arithmetic number, because the mean of its divisors is an integer number (660106425772).

Almost surely, 2^{1320212851543} is an apocalyptic number.

1320212851543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320212851543 is an equidigital number, since it uses as much as digits as its factorization.

1320212851543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 1320212851543 its reverse (3451582120231), we get a palindrome (4771794971774).

The spelling of 1320212851543 in words is "one trillion, three hundred twenty billion, two hundred twelve million, eight hundred fifty-one thousand, five hundred forty-three".