844668208464 has 40 divisors (see below), whose sum is σ = 2182107107040. Its totient is φ = 281549931648.

The previous prime is 844668208427. The next prime is 844668208511. The reversal of 844668208464 is 464802866448.

It is a happy number.

It is a super-2 number, since 2×844668208464² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 844668208398 and 844668208407.

It is a congruent number.

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, 2391739 + ... + 2722085.

It is an arithmetic number, because the mean of its divisors is an integer number (54552677676).

Almost surely, 2^844668208464 is an apocalyptic number.

It is an amenable number.

844668208464 is an abundant number, since it is smaller than the sum of its proper divisors (1337438898576).

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

844668208464 is a wasteful number, since it uses less digits than its factorization.

844668208464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383627 (or 383621 counting only the distinct ones).

The product of its (nonzero) digits is 56623104, while the sum is 60.

The spelling of 844668208464 in words is "eight hundred forty-four billion, six hundred sixty-eight million, two hundred eight thousand, four hundred sixty-four".