16621300540 has 48 divisors (see below), whose sum is σ = 37758405888. Its totient is φ = 6109553664.

The previous prime is 16621300519. The next prime is 16621300541. The reversal of 16621300540 is 4500312661.

It is a junction number, because it is equal to n+sod(n) for n = 16621300499 and 16621300508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16621300541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85357 + ... + 201316.

It is an arithmetic number, because the mean of its divisors is an integer number (786633456).

Almost surely, 2^16621300540 is an apocalyptic number.

16621300540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16621300540 is an abundant number, since it is smaller than the sum of its proper divisors (21137105348).

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

16621300540 is a wasteful number, since it uses less digits than its factorization.

16621300540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286918 (or 286916 counting only the distinct ones).

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

The spelling of 16621300540 in words is "sixteen billion, six hundred twenty-one million, three hundred thousand, five hundred forty".