16444124641 has 8 divisors (see below), whose sum is σ = 18794086784. Its totient is φ = 14094362880.

The previous prime is 16444124611. The next prime is 16444124681. The reversal of 16444124641 is 14642144461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16444124641 is a prime.

It is a super-3 number, since 3×16444124641³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16444124641.

It is not an unprimeable number, because it can be changed into a prime (16444124611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230716 + ... + 293458.

It is an arithmetic number, because the mean of its divisors is an integer number (2349260848).

Almost surely, 2^16444124641 is an apocalyptic number.

It is an amenable number.

16444124641 is a deficient number, since it is larger than the sum of its proper divisors (2349962143).

16444124641 is an equidigital number, since it uses as much as digits as its factorization.

16444124641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100191.

The product of its digits is 73728, while the sum is 37.

The spelling of 16444124641 in words is "sixteen billion, four hundred forty-four million, one hundred twenty-four thousand, six hundred forty-one".