217532147933 has 2 divisors, whose sum is σ = 217532147934. Its totient is φ = 217532147932.

The previous prime is 217532147867. The next prime is 217532147957. The reversal of 217532147933 is 339741235712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202303847524 + 15228300409 = 449782^2 + 123403^2 .

It is a cyclic number.

It is not a de Polignac number, because 217532147933 - 2²⁶ = 217465039069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217532147233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108766073966 + 108766073967.

It is an arithmetic number, because the mean of its divisors is an integer number (108766073967).

Almost surely, 2^217532147933 is an apocalyptic number.

It is an amenable number.

217532147933 is a deficient number, since it is larger than the sum of its proper divisors (1).

217532147933 is an equidigital number, since it uses as much as digits as its factorization.

217532147933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 47.

The spelling of 217532147933 in words is "two hundred seventeen billion, five hundred thirty-two million, one hundred forty-seven thousand, nine hundred thirty-three".