817195361984406 has 48 divisors (see below), whose sum is σ = 1776456366048000. Its totient is φ = 271496625825024.

The previous prime is 817195361984369. The next prime is 817195361984459. The reversal of 817195361984406 is 604489163591718.

817195361984406 is a `hidden beast` number, since 8 + 1 + 7 + 1 + 9 + 536 + 1 + 9 + 84 + 4 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14984451 + ... + 43115246.

It is an arithmetic number, because the mean of its divisors is an integer number (37009507626000).

Almost surely, 2^{817195361984406} is an apocalyptic number.

817195361984406 is an abundant number, since it is smaller than the sum of its proper divisors (959261004063594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

817195361984406 is a wasteful number, since it uses less digits than its factorization.

817195361984406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58102293 (or 58102290 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 72.

The spelling of 817195361984406 in words is "eight hundred seventeen trillion, one hundred ninety-five billion, three hundred sixty-one million, nine hundred eighty-four thousand, four hundred six".