16543005536 has 12 divisors (see below), whose sum is σ = 32569042212. Its totient is φ = 8271502752.

The previous prime is 16543005533. The next prime is 16543005547. The reversal of 16543005536 is 63550034561.

It is a self number, because there is not a number n which added to its sum of digits gives 16543005536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16543005533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258484430 + ... + 258484493.

It is an arithmetic number, because the mean of its divisors is an integer number (2714086851).

Almost surely, 2^16543005536 is an apocalyptic number.

16543005536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16543005536 is a deficient number, since it is larger than the sum of its proper divisors (16026036676).

16543005536 is an equidigital number, since it uses as much as digits as its factorization.

16543005536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516968933 (or 516968925 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 16543005536 in words is "sixteen billion, five hundred forty-three million, five thousand, five hundred thirty-six".