2040243253517 has 16 divisors (see below), whose sum is σ = 2337986676480. Its totient is φ = 1744071979392.

The previous prime is 2040243253507. The next prime is 2040243253519. The reversal of 2040243253517 is 7153523420402.

It is a cyclic number.

It is not a de Polignac number, because 2040243253517 - 2⁴ = 2040243253501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040243253519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11746568 + ... + 11918990.

It is an arithmetic number, because the mean of its divisors is an integer number (146124167280).

Almost surely, 2^{2040243253517} is an apocalyptic number.

It is an amenable number.

2040243253517 is a deficient number, since it is larger than the sum of its proper divisors (297743422963).

2040243253517 is a wasteful number, since it uses less digits than its factorization.

2040243253517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176972.

The product of its (nonzero) digits is 201600, while the sum is 38.

Adding to 2040243253517 its reverse (7153523420402), we get a palindrome (9193766673919).

The spelling of 2040243253517 in words is "two trillion, forty billion, two hundred forty-three million, two hundred fifty-three thousand, five hundred seventeen".