16440104801 has 4 divisors (see below), whose sum is σ = 16447535892. Its totient is φ = 16432673712.

The previous prime is 16440104783. The next prime is 16440104803. The reversal of 16440104801 is 10840104461.

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 13795677025 + 2644427776 = 117455^2 + 51424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16440104801 is a prime.

It is a super-3 number, since 3×16440104801³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16440104803) 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, 3712226 + ... + 3716651.

It is an arithmetic number, because the mean of its divisors is an integer number (4111883973).

Almost surely, 2^16440104801 is an apocalyptic number.

It is an amenable number.

16440104801 is a deficient number, since it is larger than the sum of its proper divisors (7431091).

16440104801 is an equidigital number, since it uses as much as digits as its factorization.

16440104801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7431090.

The product of its (nonzero) digits is 3072, while the sum is 29.

The spelling of 16440104801 in words is "sixteen billion, four hundred forty million, one hundred four thousand, eight hundred one".