216167216597 has 2 divisors, whose sum is σ = 216167216598. Its totient is φ = 216167216596.

The previous prime is 216167216569. The next prime is 216167216641. The reversal of 216167216597 is 795612761612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116790328516 + 99376888081 = 341746^2 + 315241^2 .

It is a cyclic number.

It is not a de Polignac number, because 216167216597 - 2³² = 211872249301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216167216567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108083608298 + 108083608299.

It is an arithmetic number, because the mean of its divisors is an integer number (108083608299).

Almost surely, 2^216167216597 is an apocalyptic number.

It is an amenable number.

216167216597 is a deficient number, since it is larger than the sum of its proper divisors (1).

216167216597 is an equidigital number, since it uses as much as digits as its factorization.

216167216597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The spelling of 216167216597 in words is "two hundred sixteen billion, one hundred sixty-seven million, two hundred sixteen thousand, five hundred ninety-seven".