40491502800 has 180 divisors, whose sum is σ = 150884780256. Its totient is φ = 9255187200.

The previous prime is 40491502787. The next prime is 40491502801. The reversal of 40491502800 is 820519404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40491502801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 285516 + ... + 403115.

Almost surely, 2^40491502800 is an apocalyptic number.

40491502800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40491502800 is an abundant number, since it is smaller than the sum of its proper divisors (110393277456).

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

40491502800 is a wasteful number, since it uses less digits than its factorization.

40491502800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688666 (or 688648 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 40491502800 in words is "forty billion, four hundred ninety-one million, five hundred two thousand, eight hundred".