16819247444 has 24 divisors (see below), whose sum is σ = 30730347648. Its totient is φ = 8039551520.

The previous prime is 16819247441. The next prime is 16819247447. The reversal of 16819247444 is 44474291861.

It is an interprime number because it is at equal distance from previous prime (16819247441) and next prime (16819247447).

It is a junction number, because it is equal to n+sod(n) for n = 16819247392 and 16819247401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16819247441) 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, 120434 + ... + 219414.

It is an arithmetic number, because the mean of its divisors is an integer number (1280431152).

Almost surely, 2^16819247444 is an apocalyptic number.

It is an amenable number.

16819247444 is a deficient number, since it is larger than the sum of its proper divisors (13911100204).

16819247444 is a wasteful number, since it uses less digits than its factorization.

16819247444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100855 (or 100853 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The spelling of 16819247444 in words is "sixteen billion, eight hundred nineteen million, two hundred forty-seven thousand, four hundred forty-four".