217492325090 has 8 divisors (see below), whose sum is σ = 391486185180. Its totient is φ = 86996930032.

The previous prime is 217492325059. The next prime is 217492325117. The reversal of 217492325090 is 90523294712.

It can be written as a sum of positive squares in 2 ways, for example, as 200742529849 + 16749795241 = 448043^2 + 129421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×217492325090² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10874616245 + ... + 10874616264.

Almost surely, 2^217492325090 is an apocalyptic number.

217492325090 is a deficient number, since it is larger than the sum of its proper divisors (173993860090).

217492325090 is a wasteful number, since it uses less digits than its factorization.

217492325090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21749232516.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 217492325090 in words is "two hundred seventeen billion, four hundred ninety-two million, three hundred twenty-five thousand, ninety".