404000240016 has 80 divisors (see below), whose sum is σ = 1054655358848. Its totient is φ = 133249536000.

The previous prime is 404000240003. The next prime is 404000240023. The reversal of 404000240016 is 610042000404.

It is a junction number, because it is equal to n+sod(n) for n = 404000239974 and 404000240001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37712901 + ... + 37723611.

Almost surely, 2^404000240016 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 404000240016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527327679424).

404000240016 is an abundant number, since it is smaller than the sum of its proper divisors (650655118832).

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

404000240016 is a wasteful number, since it uses less digits than its factorization.

404000240016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18920 (or 18914 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The spelling of 404000240016 in words is "four hundred four billion, two hundred forty thousand, sixteen".