40403312550 has 36 divisors (see below), whose sum is σ = 108550234260. Its totient is φ = 10774216560.

The previous prime is 40403312539. The next prime is 40403312557. The reversal of 40403312550 is 5521330404.

40403312550 is a `hidden beast` number, since 4 + 0 + 403 + 3 + 1 + 255 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403312557) 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 17 ways as a sum of consecutive naturals, for example, 44892120 + ... + 44893019.

It is an arithmetic number, because the mean of its divisors is an integer number (3015284285).

Almost surely, 2^40403312550 is an apocalyptic number.

40403312550 is an abundant number, since it is smaller than the sum of its proper divisors (68146921710).

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

40403312550 is a wasteful number, since it uses less digits than its factorization.

40403312550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89785157 (or 89785149 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 40403312550 its reverse (5521330404), we get a palindrome (45924642954).

The spelling of 40403312550 in words is "forty billion, four hundred three million, three hundred twelve thousand, five hundred fifty".