16580909580 has 48 divisors (see below), whose sum is σ = 46515404544. Its totient is φ = 4413113280.

The previous prime is 16580909551. The next prime is 16580909623. The reversal of 16580909580 is 8590908561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232816 + ... + 295575.

It is an arithmetic number, because the mean of its divisors is an integer number (969070928).

Almost surely, 2^16580909580 is an apocalyptic number.

16580909580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16580909580 is an abundant number, since it is smaller than the sum of its proper divisors (29934494964).

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

16580909580 is a wasteful number, since it uses less digits than its factorization.

16580909580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528926 (or 528924 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 51.

The spelling of 16580909580 in words is "sixteen billion, five hundred eighty million, nine hundred nine thousand, five hundred eighty".