216671517053 has 2 divisors, whose sum is σ = 216671517054. Its totient is φ = 216671517052.

The previous prime is 216671516993. The next prime is 216671517061. The reversal of 216671517053 is 350715176612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167328447364 + 49343069689 = 409058^2 + 222133^2 .

It is a cyclic number.

It is not a de Polignac number, because 216671517053 - 2²⁸ = 216403081597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216671516995 and 216671517013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216670517053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108335758526 + 108335758527.

It is an arithmetic number, because the mean of its divisors is an integer number (108335758527).

Almost surely, 2^216671517053 is an apocalyptic number.

It is an amenable number.

216671517053 is a deficient number, since it is larger than the sum of its proper divisors (1).

216671517053 is an equidigital number, since it uses as much as digits as its factorization.

216671517053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 216671517053 in words is "two hundred sixteen billion, six hundred seventy-one million, five hundred seventeen thousand, fifty-three".