16240412641 has 4 divisors (see below), whose sum is σ = 16800426900. Its totient is φ = 15680398384.

The previous prime is 16240412569. The next prime is 16240412651. The reversal of 16240412641 is 14621404261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5212262416 + 11028150225 = 72196^2 + 105015^2 .

It is a cyclic number.

It is not a de Polignac number, because 16240412641 - 2²⁵ = 16206858209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16240412651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280007086 + ... + 280007143.

It is an arithmetic number, because the mean of its divisors is an integer number (4200106725).

Almost surely, 2^16240412641 is an apocalyptic number.

It is an amenable number.

16240412641 is a deficient number, since it is larger than the sum of its proper divisors (560014259).

16240412641 is an equidigital number, since it uses as much as digits as its factorization.

16240412641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560014258.

The product of its (nonzero) digits is 9216, while the sum is 31.

The spelling of 16240412641 in words is "sixteen billion, two hundred forty million, four hundred twelve thousand, six hundred forty-one".