40440402042440 has 64 divisors (see below), whose sum is σ = 95782219372800. Its totient is φ = 15324412764672.

The previous prime is 40440402042427. The next prime is 40440402042451. The reversal of 40440402042440 is 4424020404404.

It is a super-2 number, since 2×40440402042440² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40440402042397 and 40440402042406.

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, 31831244 + ... + 33077316.

It is an arithmetic number, because the mean of its divisors is an integer number (1496597177700).

Almost surely, 2^{40440402042440} is an apocalyptic number.

40440402042440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40440402042440 is an abundant number, since it is smaller than the sum of its proper divisors (55341817330360).

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

40440402042440 is a wasteful number, since it uses less digits than its factorization.

40440402042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288806 (or 1288802 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 40440402042440 its reverse (4424020404404), we get a palindrome (44864422446844).

The spelling of 40440402042440 in words is "forty trillion, four hundred forty billion, four hundred two million, forty-two thousand, four hundred forty".