16845543444 has 24 divisors (see below), whose sum is σ = 39308397408. Its totient is φ = 5614876960.

The previous prime is 16845543401. The next prime is 16845543487. The reversal of 16845543444 is 44434554861.

It is an interprime number because it is at equal distance from previous prime (16845543401) and next prime (16845543487).

It is a super-2 number, since 2×16845543444² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16845543393 and 16845543402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356239 + ... + 400745.

It is an arithmetic number, because the mean of its divisors is an integer number (1637849892).

Almost surely, 2^16845543444 is an apocalyptic number.

It is an amenable number.

16845543444 is an abundant number, since it is smaller than the sum of its proper divisors (22462853964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16845543444 is a wasteful number, since it uses less digits than its factorization.

16845543444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76055 (or 76053 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 48.

The spelling of 16845543444 in words is "sixteen billion, eight hundred forty-five million, five hundred forty-three thousand, four hundred forty-four".