40403213144 has 128 divisors (see below), whose sum is σ = 90397655040. Its totient is φ = 16571060352.

The previous prime is 40403213141. The next prime is 40403213171. The reversal of 40403213144 is 44131230404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403213141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35977367 + ... + 35978489.

It is an arithmetic number, because the mean of its divisors is an integer number (706231680).

Almost surely, 2^40403213144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40403213144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45198827520).

40403213144 is an abundant number, since it is smaller than the sum of its proper divisors (49994441896).

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

40403213144 is a wasteful number, since it uses less digits than its factorization.

40403213144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 40403213144 its reverse (44131230404), we get a palindrome (84534443548).

The spelling of 40403213144 in words is "forty billion, four hundred three million, two hundred thirteen thousand, one hundred forty-four".