216332648177 has 2 divisors, whose sum is σ = 216332648178. Its totient is φ = 216332648176.

The previous prime is 216332648171. The next prime is 216332648183. The reversal of 216332648177 is 771846233612.

It is a balanced prime because it is at equal distance from previous prime (216332648171) and next prime (216332648183).

It can be written as a sum of positive squares in only one way, i.e., 205817376241 + 10515271936 = 453671^2 + 102544^2 .

It is a cyclic number.

It is not a de Polignac number, because 216332648177 - 2²⁶ = 216265539313 is a prime.

It is a super-2 number, since 2×216332648177² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (216332648171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108166324088 + 108166324089.

It is an arithmetic number, because the mean of its divisors is an integer number (108166324089).

Almost surely, 2^216332648177 is an apocalyptic number.

It is an amenable number.

216332648177 is a deficient number, since it is larger than the sum of its proper divisors (1).

216332648177 is an equidigital number, since it uses as much as digits as its factorization.

216332648177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 50.

The spelling of 216332648177 in words is "two hundred sixteen billion, three hundred thirty-two million, six hundred forty-eight thousand, one hundred seventy-seven".