404450697128 has 16 divisors (see below), whose sum is σ = 762194527380. Its totient is φ = 201198823168.

The previous prime is 404450697023. The next prime is 404450697169. The reversal of 404450697128 is 821796054404.

It can be written as a sum of positive squares in 2 ways, for example, as 243327131524 + 161123565604 = 493282^2 + 401402^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128314001 + ... + 128317152.

Almost surely, 2^404450697128 is an apocalyptic number.

It is an amenable number.

404450697128 is a deficient number, since it is larger than the sum of its proper divisors (357743830252).

404450697128 is a wasteful number, since it uses less digits than its factorization.

404450697128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256631356 (or 256631352 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 404450697128 in words is "four hundred four billion, four hundred fifty million, six hundred ninety-seven thousand, one hundred twenty-eight".