1321848213527 has 2 divisors, whose sum is σ = 1321848213528. Its totient is φ = 1321848213526.

The previous prime is 1321848213479. The next prime is 1321848213611. The reversal of 1321848213527 is 7253128481231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321848213527 - 2²⁰ = 1321847164951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321848213827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660924106763 + 660924106764.

It is an arithmetic number, because the mean of its divisors is an integer number (660924106764).

Almost surely, 2^{1321848213527} is an apocalyptic number.

1321848213527 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321848213527 is an equidigital number, since it uses as much as digits as its factorization.

1321848213527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 47.

The spelling of 1321848213527 in words is "one trillion, three hundred twenty-one billion, eight hundred forty-eight million, two hundred thirteen thousand, five hundred twenty-seven".