16623541000 has 64 divisors (see below), whose sum is σ = 42435394560. Its totient is φ = 6044920000.

The previous prime is 16623540959. The next prime is 16623541007. The reversal of 16623541000 is 14532661.

It is a self number, because there is not a number n which added to its sum of digits gives 16623541000.

It is not an unprimeable number, because it can be changed into a prime (16623541007) 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 15 ways as a sum of consecutive naturals, for example, 744616 + ... + 766615.

It is an arithmetic number, because the mean of its divisors is an integer number (663053040).

Almost surely, 2^16623541000 is an apocalyptic number.

16623541000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16623541000 is an abundant number, since it is smaller than the sum of its proper divisors (25811853560).

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

16623541000 is a wasteful number, since it uses less digits than its factorization.

16623541000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511263 (or 1511249 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 16623541000 in words is "sixteen billion, six hundred twenty-three million, five hundred forty-one thousand".