16021834401 has 4 divisors (see below), whose sum is σ = 21362445872. Its totient is φ = 10681222932.

The previous prime is 16021834373. The next prime is 16021834427. The reversal of 16021834401 is 10443812061.

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.

It is not a de Polignac number, because 16021834401 - 2¹⁸ = 16021572257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16021834441) 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, 2670305731 + ... + 2670305736.

It is an arithmetic number, because the mean of its divisors is an integer number (5340611468).

Almost surely, 2^16021834401 is an apocalyptic number.

It is an amenable number.

16021834401 is a deficient number, since it is larger than the sum of its proper divisors (5340611471).

16021834401 is an equidigital number, since it uses as much as digits as its factorization.

16021834401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5340611470.

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 16021834401 in words is "sixteen billion, twenty-one million, eight hundred thirty-four thousand, four hundred one".