16556435080 has 32 divisors (see below), whose sum is σ = 39212611200. Its totient is φ = 6274017216.

The previous prime is 16556435053. The next prime is 16556435083. The reversal of 16556435080 is 8053465561.

It is not an unprimeable number, because it can be changed into a prime (16556435083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10891632 + ... + 10893151.

It is an arithmetic number, because the mean of its divisors is an integer number (1225394100).

Almost surely, 2^16556435080 is an apocalyptic number.

16556435080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16556435080 is an abundant number, since it is smaller than the sum of its proper divisors (22656176120).

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

16556435080 is a wasteful number, since it uses less digits than its factorization.

16556435080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21784813 (or 21784809 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 16556435080 in words is "sixteen billion, five hundred fifty-six million, four hundred thirty-five thousand, eighty".