16601255441 has 4 divisors (see below), whose sum is σ = 16604152884. Its totient is φ = 16598358000.

The previous prime is 16601255413. The next prime is 16601255467. The reversal of 16601255441 is 14455210661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14455210661 = 883 ⋅16370567.

It can be written as a sum of positive squares in 2 ways, for example, as 5718384400 + 10882871041 = 75620^2 + 104321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16601255441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16601255141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440110 + ... + 1451591.

It is an arithmetic number, because the mean of its divisors is an integer number (4151038221).

Almost surely, 2^16601255441 is an apocalyptic number.

It is an amenable number.

16601255441 is a deficient number, since it is larger than the sum of its proper divisors (2897443).

16601255441 is an equidigital number, since it uses as much as digits as its factorization.

16601255441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897442.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 16601255441 in words is "sixteen billion, six hundred one million, two hundred fifty-five thousand, four hundred forty-one".