216741539867 has 2 divisors, whose sum is σ = 216741539868. Its totient is φ = 216741539866.

The previous prime is 216741539821. The next prime is 216741539891. The reversal of 216741539867 is 768935147612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216741539867 - 2¹² = 216741535771 is a prime.

It is not a weakly prime, because it can be changed into another prime (216743539867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108370769933 + 108370769934.

It is an arithmetic number, because the mean of its divisors is an integer number (108370769934).

Almost surely, 2^216741539867 is an apocalyptic number.

216741539867 is a deficient number, since it is larger than the sum of its proper divisors (1).

216741539867 is an equidigital number, since it uses as much as digits as its factorization.

216741539867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 59.

The spelling of 216741539867 in words is "two hundred sixteen billion, seven hundred forty-one million, five hundred thirty-nine thousand, eight hundred sixty-seven".