40013432240 has 40 divisors (see below), whose sum is σ = 93085984080. Its totient is φ = 15995952896.

The previous prime is 40013432237. The next prime is 40013432279. The reversal of 40013432240 is 4223431004.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9614 + ... + 283053.

It is an arithmetic number, because the mean of its divisors is an integer number (2327149602).

Almost surely, 2^40013432240 is an apocalyptic number.

40013432240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40013432240 is an abundant number, since it is smaller than the sum of its proper divisors (53072551840).

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

40013432240 is a wasteful number, since it uses less digits than its factorization.

40013432240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294389 (or 294383 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40013432240 its reverse (4223431004), we get a palindrome (44236863244).

The spelling of 40013432240 in words is "forty billion, thirteen million, four hundred thirty-two thousand, two hundred forty".