16531533424 has 20 divisors (see below), whose sum is σ = 36605538544. Its totient is φ = 7084942848.

The previous prime is 16531533377. The next prime is 16531533427. The reversal of 16531533424 is 42433513561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16531533427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73801377 + ... + 73801600.

Almost surely, 2^16531533424 is an apocalyptic number.

16531533424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16531533424 is an abundant number, since it is smaller than the sum of its proper divisors (20074005120).

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

16531533424 is a wasteful number, since it uses less digits than its factorization.

16531533424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147602992 (or 147602986 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The spelling of 16531533424 in words is "sixteen billion, five hundred thirty-one million, five hundred thirty-three thousand, four hundred twenty-four".