40809558400 has 96 divisors (see below), whose sum is σ = 108567270000. Its totient is φ = 15068129280.

The previous prime is 40809558397. The next prime is 40809558463. The reversal of 40809558400 is 485590804.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448900 + ... + 532099.

Almost surely, 2^40809558400 is an apocalyptic number.

40809558400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40809558400 is an abundant number, since it is smaller than the sum of its proper divisors (67757711600).

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

40809558400 is a wasteful number, since it uses less digits than its factorization.

40809558400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981036 (or 981019 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 40809558400 in words is "forty billion, eight hundred nine million, five hundred fifty-eight thousand, four hundred".