216752208653 has 2 divisors, whose sum is σ = 216752208654. Its totient is φ = 216752208652.

The previous prime is 216752208559. The next prime is 216752208689. The reversal of 216752208653 is 356802257612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121244632804 + 95507575849 = 348202^2 + 309043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216752208653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216752208598 and 216752208607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216752208053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108376104326 + 108376104327.

It is an arithmetic number, because the mean of its divisors is an integer number (108376104327).

Almost surely, 2^216752208653 is an apocalyptic number.

It is an amenable number.

216752208653 is a deficient number, since it is larger than the sum of its proper divisors (1).

216752208653 is an equidigital number, since it uses as much as digits as its factorization.

216752208653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 216752208653 in words is "two hundred sixteen billion, seven hundred fifty-two million, two hundred eight thousand, six hundred fifty-three".