40550400000 has 648 divisors, whose sum is σ = 159733167048. Its totient is φ = 9830400000.

The previous prime is 40550399971. The next prime is 40550400013. The reversal of 40550400000 is 405504.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3686399995 + ... + 3686400005.

It is an arithmetic number, because the mean of its divisors is an integer number (246501801).

Almost surely, 2^40550400000 is an apocalyptic number.

40550400000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40550400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79866583524).

40550400000 is an abundant number, since it is smaller than the sum of its proper divisors (119182767048).

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

40550400000 is an frugal number, since it uses more digits than its factorization.

40550400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

Adding to 40550400000 its reverse (405504), we get a palindrome (40550805504).

40550400000 divided by its reverse (405504) gives a 5-th power (100000 = 10⁵).

It can be divided in two parts, 405 and 50400000, that added together give a palindrome (50400405).

The spelling of 40550400000 in words is "forty billion, five hundred fifty million, four hundred thousand".