40203556400 has 120 divisors (see below), whose sum is σ = 110799917280. Its totient is φ = 13732577280.

The previous prime is 40203556397. The next prime is 40203556423. The reversal of 40203556400 is 465530204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 726512 + ... + 779888.

It is an arithmetic number, because the mean of its divisors is an integer number (923332644).

Almost surely, 2^40203556400 is an apocalyptic number.

40203556400 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 40203556400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55399958640).

40203556400 is an abundant number, since it is smaller than the sum of its proper divisors (70596360880).

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

40203556400 is a wasteful number, since it uses less digits than its factorization.

40203556400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53671 (or 53660 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 40203556400 in words is "forty billion, two hundred three million, five hundred fifty-six thousand, four hundred".