404522494816 has 192 divisors, whose sum is σ = 910064719872. Its totient is φ = 175334400000.

The previous prime is 404522494703. The next prime is 404522494853. The reversal of 404522494816 is 618494225404.

It is a self number, because there is not a number n which added to its sum of digits gives 404522494816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265608231 + ... + 265609753.

It is an arithmetic number, because the mean of its divisors is an integer number (4739920416).

Almost surely, 2^404522494816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404522494816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455032359936).

404522494816 is an abundant number, since it is smaller than the sum of its proper divisors (505542225056).

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

404522494816 is a wasteful number, since it uses less digits than its factorization.

404522494816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1909 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 404522494816 in words is "four hundred four billion, five hundred twenty-two million, four hundred ninety-four thousand, eight hundred sixteen".