16240042513 has 4 divisors (see below), whose sum is σ = 16273118448. Its totient is φ = 16206966580.

The previous prime is 16240042487. The next prime is 16240042517. The reversal of 16240042513 is 31524004261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31524004261 = 19 ⋅1659158119.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16240042513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16240042517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16537231 + ... + 16538212.

It is an arithmetic number, because the mean of its divisors is an integer number (4068279612).

Almost surely, 2^16240042513 is an apocalyptic number.

It is an amenable number.

16240042513 is a deficient number, since it is larger than the sum of its proper divisors (33075935).

16240042513 is an equidigital number, since it uses as much as digits as its factorization.

16240042513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33075934.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 16240042513 its reverse (31524004261), we get a palindrome (47764046774).

The spelling of 16240042513 in words is "sixteen billion, two hundred forty million, forty-two thousand, five hundred thirteen".