16004454601 has 4 divisors (see below), whose sum is σ = 16011862804. Its totient is φ = 15997046400.

The previous prime is 16004454593. The next prime is 16004454667. The reversal of 16004454601 is 10645440061.

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 5110105225 + 10894349376 = 71485^2 + 104376^2 .

It is a cyclic number.

It is not a de Polignac number, because 16004454601 - 2³ = 16004454593 is a prime.

It is a super-2 number, since 2×16004454601² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16004454671) 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, 3700860 + ... + 3705181.

It is an arithmetic number, because the mean of its divisors is an integer number (4002965701).

Almost surely, 2^16004454601 is an apocalyptic number.

It is an amenable number.

16004454601 is a deficient number, since it is larger than the sum of its proper divisors (7408203).

16004454601 is an equidigital number, since it uses as much as digits as its factorization.

16004454601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7408202.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 16004454601 its reverse (10645440061), we get a palindrome (26649894662).

The spelling of 16004454601 in words is "sixteen billion, four million, four hundred fifty-four thousand, six hundred one".