5431216121327 has 2 divisors, whose sum is σ = 5431216121328. Its totient is φ = 5431216121326.

The previous prime is 5431216121321. The next prime is 5431216121431. The reversal of 5431216121327 is 7231216121345.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5431216121327 - 2¹⁰ = 5431216120303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5431216121321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2715608060663 + 2715608060664.

It is an arithmetic number, because the mean of its divisors is an integer number (2715608060664).

Almost surely, 2^{5431216121327} is an apocalyptic number.

5431216121327 is a deficient number, since it is larger than the sum of its proper divisors (1).

5431216121327 is an equidigital number, since it uses as much as digits as its factorization.

5431216121327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The spelling of 5431216121327 in words is "five trillion, four hundred thirty-one billion, two hundred sixteen million, one hundred twenty-one thousand, three hundred twenty-seven".