404642060720 has 80 divisors (see below), whose sum is σ = 996836385888. Its totient is φ = 152228352000.

The previous prime is 404642060701. The next prime is 404642060723. The reversal of 404642060720 is 27060246404.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (404642060723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1836470 + ... + 2044970.

Almost surely, 2^404642060720 is an apocalyptic number.

404642060720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404642060720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498418192944).

404642060720 is an abundant number, since it is smaller than the sum of its proper divisors (592194325168).

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

404642060720 is a wasteful number, since it uses less digits than its factorization.

404642060720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209958 (or 209952 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 35.

The spelling of 404642060720 in words is "four hundred four billion, six hundred forty-two million, sixty thousand, seven hundred twenty".