40405343304 has 128 divisors (see below), whose sum is σ = 109415318400. Its totient is φ = 12394137600.

The previous prime is 40405343261. The next prime is 40405343309. The reversal of 40405343304 is 40334350404.

It is not an unprimeable number, because it can be changed into a prime (40405343309) 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, 2432692 + ... + 2449244.

It is an arithmetic number, because the mean of its divisors is an integer number (854807175).

Almost surely, 2^40405343304 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 40405343304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54707659200).

40405343304 is an abundant number, since it is smaller than the sum of its proper divisors (69009975096).

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

40405343304 is a wasteful number, since it uses less digits than its factorization.

40405343304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16735 (or 16731 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 40405343304 its reverse (40334350404), we get a palindrome (80739693708).

The spelling of 40405343304 in words is "forty billion, four hundred five million, three hundred forty-three thousand, three hundred four".