8240040222440 has 64 divisors (see below), whose sum is σ = 19968400564560. Its totient is φ = 3042148884480.

The previous prime is 8240040222373. The next prime is 8240040222457. The reversal of 8240040222440 is 442220400428.

It can be written as a sum of positive squares in 8 ways, for example, as 1316311057636 + 6923729164804 = 1147306^2 + 2631298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8240040222397 and 8240040222406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4009112 + ... + 5705528.

Almost surely, 2^{8240040222440} is an apocalyptic number.

It is an amenable number.

8240040222440 is an abundant number, since it is smaller than the sum of its proper divisors (11728360342120).

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

8240040222440 is a wasteful number, since it uses less digits than its factorization.

8240040222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705782 (or 1705778 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 8240040222440 its reverse (442220400428), we get a palindrome (8682260622868).

The spelling of 8240040222440 in words is "eight trillion, two hundred forty billion, forty million, two hundred twenty-two thousand, four hundred forty".