16886441538 has 54 divisors (see below), whose sum is σ = 37057909707. Its totient is φ = 5557325760.

The previous prime is 16886441531. The next prime is 16886441543. The reversal of 16886441538 is 83514468861.

16886441538 is a `hidden beast` number, since 1 + 6 + 8 + 8 + 64 + 41 + 538 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 14285747529 + 2600694009 = 119523^2 + 50997^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=91887.

It is not an unprimeable number, because it can be changed into a prime (16886441531) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60093958 + ... + 60094238.

Almost surely, 2^16886441538 is an apocalyptic number.

16886441538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16886441538 is an abundant number, since it is smaller than the sum of its proper divisors (20171468169).

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

16886441538 is an equidigital number, since it uses as much as digits as its factorization.

16886441538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 395 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 16886441538 in words is "sixteen billion, eight hundred eighty-six million, four hundred forty-one thousand, five hundred thirty-eight".