216611330543 has 2 divisors, whose sum is σ = 216611330544. Its totient is φ = 216611330542.

The previous prime is 216611330521. The next prime is 216611330557. The reversal of 216611330543 is 345033116612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216611330543 - 2²⁰ = 216610281967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216611330513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108305665271 + 108305665272.

It is an arithmetic number, because the mean of its divisors is an integer number (108305665272).

Almost surely, 2^216611330543 is an apocalyptic number.

216611330543 is a deficient number, since it is larger than the sum of its proper divisors (1).

216611330543 is an equidigital number, since it uses as much as digits as its factorization.

216611330543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 216611330543 in words is "two hundred sixteen billion, six hundred eleven million, three hundred thirty thousand, five hundred forty-three".