16530423800 has 48 divisors (see below), whose sum is σ = 41927171400. Its totient is φ = 6011062400.

The previous prime is 16530423769. The next prime is 16530423821. The reversal of 16530423800 is 832403561.

It is a super-2 number, since 2×16530423800² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3754715 + ... + 3759114.

Almost surely, 2^16530423800 is an apocalyptic number.

16530423800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16530423800 is an abundant number, since it is smaller than the sum of its proper divisors (25396747600).

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

16530423800 is a wasteful number, since it uses less digits than its factorization.

16530423800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513856 (or 7513847 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 16530423800 in words is "sixteen billion, five hundred thirty million, four hundred twenty-three thousand, eight hundred".