817482425890 has 16 divisors (see below), whose sum is σ = 1584658241208. Its totient is φ = 301839664896.

The previous prime is 817482425869. The next prime is 817482425917. The reversal of 817482425890 is 98524284718.

It can be written as a sum of positive squares in 4 ways, for example, as 695317496449 + 122164929441 = 833857^2 + 349521^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3144163047 + ... + 3144163306.

Almost surely, 2^817482425890 is an apocalyptic number.

817482425890 is a deficient number, since it is larger than the sum of its proper divisors (767175815318).

817482425890 is a wasteful number, since it uses less digits than its factorization.

817482425890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6288326373.

The product of its (nonzero) digits is 10321920, while the sum is 58.

The spelling of 817482425890 in words is "eight hundred seventeen billion, four hundred eighty-two million, four hundred twenty-five thousand, eight hundred ninety".