2540446443 has 32 divisors (see below), whose sum is σ = 3849198080. Its totient is φ = 1655471520.

The previous prime is 2540446423. The next prime is 2540446481. The reversal of 2540446443 is 3446440452.

2540446443 is a `hidden beast` number, since 2 + 5 + 4 + 0 + 4 + 4 + 644 + 3 = 666.

It is not a de Polignac number, because 2540446443 - 2⁶ = 2540446379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2540446398 and 2540446407.

It is not an unprimeable number, because it can be changed into a prime (2540446423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263730 + ... + 273192.

It is an arithmetic number, because the mean of its divisors is an integer number (120287440).

Almost surely, 2^2540446443 is an apocalyptic number.

2540446443 is a deficient number, since it is larger than the sum of its proper divisors (1308751637).

2540446443 is a wasteful number, since it uses less digits than its factorization.

2540446443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9696 (or 9690 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

The square root of 2540446443 is about 50402.8416163216. The cubic root of 2540446443 is about 1364.4889235104.

Adding to 2540446443 its reverse (3446440452), we get a palindrome (5986886895).

The spelling of 2540446443 in words is "two billion, five hundred forty million, four hundred forty-six thousand, four hundred forty-three".