40013215240 has 16 divisors (see below), whose sum is σ = 90029734380. Its totient is φ = 16005286080.

The previous prime is 40013215219. The next prime is 40013215241. The reversal of 40013215240 is 4251231004.

It can be written as a sum of positive squares in 2 ways, for example, as 33145115364 + 6868099876 = 182058^2 + 82874^2 .

It is not an unprimeable number, because it can be changed into a prime (40013215241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500165151 + ... + 500165230.

Almost surely, 2^40013215240 is an apocalyptic number.

40013215240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40013215240 is an abundant number, since it is smaller than the sum of its proper divisors (50016519140).

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

40013215240 is a wasteful number, since it uses less digits than its factorization.

40013215240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000330392 (or 1000330388 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 40013215240 its reverse (4251231004), we get a palindrome (44264446244).

The spelling of 40013215240 in words is "forty billion, thirteen million, two hundred fifteen thousand, two hundred forty".