617832478883421 has 12 divisors (see below), whose sum is σ = 892493451014880. Its totient is φ = 411856584196680.

The previous prime is 617832478883359. The next prime is 617832478883437. The reversal of 617832478883421 is 124388874238716.

617832478883421 is a `hidden beast` number, since 6 + 1 + 7 + 8 + 3 + 2 + 47 + 88 + 83 + 421 = 666.

It is not a de Polignac number, because 617832478883421 - 2⁹ = 617832478882909 is a prime.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 617832478883421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617832478883461) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2644464945 + ... + 2644698566.

It is an arithmetic number, because the mean of its divisors is an integer number (74374454251240).

Almost surely, 2^{617832478883421} is an apocalyptic number.

It is an amenable number.

617832478883421 is a deficient number, since it is larger than the sum of its proper divisors (274660972131459).

617832478883421 is a wasteful number, since it uses less digits than its factorization.

617832478883421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289176496 (or 5289176493 counting only the distinct ones).

The product of its digits is 693633024, while the sum is 72.

The spelling of 617832478883421 in words is "six hundred seventeen trillion, eight hundred thirty-two billion, four hundred seventy-eight million, eight hundred eighty-three thousand, four hundred twenty-one".