216514123473377 has 2 divisors, whose sum is σ = 216514123473378. Its totient is φ = 216514123473376.

The previous prime is 216514123473353. The next prime is 216514123473517. The reversal of 216514123473377 is 773374321415612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210180666716881 + 6333456756496 = 14497609^2 + 2516636^2 .

It is a cyclic number.

It is not a de Polignac number, because 216514123473377 - 2⁸ = 216514123473121 is a prime.

It is not a weakly prime, because it can be changed into another prime (216514123473577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108257061736688 + 108257061736689.

It is an arithmetic number, because the mean of its divisors is an integer number (108257061736689).

Almost surely, 2^{216514123473377} is an apocalyptic number.

It is an amenable number.

216514123473377 is a deficient number, since it is larger than the sum of its proper divisors (1).

216514123473377 is an equidigital number, since it uses as much as digits as its factorization.

216514123473377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17781120, while the sum is 56.

Adding to 216514123473377 its reverse (773374321415612), we get a palindrome (989888444888989).

The spelling of 216514123473377 in words is "two hundred sixteen trillion, five hundred fourteen billion, one hundred twenty-three million, four hundred seventy-three thousand, three hundred seventy-seven".