404040077598640 has 120 divisors (see below), whose sum is σ = 1092787896397392. Its totient is φ = 138524933352960.

The previous prime is 404040077598629. The next prime is 404040077598643. The reversal of 404040077598640 is 46895770040404.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (404040077598643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177980802 + ... + 180236638.

Almost surely, 2^{404040077598640} is an apocalyptic number.

404040077598640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404040077598640 is an abundant number, since it is smaller than the sum of its proper divisors (688747818798752).

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

404040077598640 is a wasteful number, since it uses less digits than its factorization.

404040077598640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301555 (or 2301542 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 58.

The spelling of 404040077598640 in words is "four hundred four trillion, forty billion, seventy-seven million, five hundred ninety-eight thousand, six hundred forty".