216703376006473 has 2 divisors, whose sum is σ = 216703376006474. Its totient is φ = 216703376006472.

The previous prime is 216703376006441. The next prime is 216703376006501. The reversal of 216703376006473 is 374600673307612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215056124403264 + 1647251603209 = 14664792^2 + 1283453^2 .

It is a cyclic number.

It is not a de Polignac number, because 216703376006473 - 2⁵ = 216703376006441 is a prime.

It is not a weakly prime, because it can be changed into another prime (216703376001473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108351688003236 + 108351688003237.

It is an arithmetic number, because the mean of its divisors is an integer number (108351688003237).

Almost surely, 2^{216703376006473} is an apocalyptic number.

It is an amenable number.

216703376006473 is a deficient number, since it is larger than the sum of its proper divisors (1).

216703376006473 is an equidigital number, since it uses as much as digits as its factorization.

216703376006473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16003008, while the sum is 55.

The spelling of 216703376006473 in words is "two hundred sixteen trillion, seven hundred three billion, three hundred seventy-six million, six thousand, four hundred seventy-three".