16531532805 has 8 divisors (see below), whose sum is σ = 26450452512. Its totient is φ = 8816817488.

The previous prime is 16531532791. The next prime is 16531532807. The reversal of 16531532805 is 50823513561.

16531532805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 16531532805 - 2¹⁰ = 16531531781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16531532807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551051079 + ... + 551051108.

It is an arithmetic number, because the mean of its divisors is an integer number (3306306564).

Almost surely, 2^16531532805 is an apocalyptic number.

16531532805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16531532805 is a deficient number, since it is larger than the sum of its proper divisors (9918919707).

16531532805 is a wasteful number, since it uses less digits than its factorization.

16531532805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102102195.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 16531532805 in words is "sixteen billion, five hundred thirty-one million, five hundred thirty-two thousand, eight hundred five".