16550307904 has 63 divisors (see below), whose sum is σ = 35591430087. Its totient is φ = 7632428544.

The previous prime is 16550307881. The next prime is 16550307929. The reversal of 16550307904 is 40970305561.

The square root of 16550307904 is 128648.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 248125504 + 16302182400 = 15752^2 + 127680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13378774 + ... + 13380010.

Almost surely, 2^16550307904 is an apocalyptic number.

16550307904 is the 128648-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16550307904

16550307904 is an abundant number, since it is smaller than the sum of its proper divisors (19041122183).

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

16550307904 is an frugal number, since it uses more digits than its factorization.

16550307904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 16550307904 in words is "sixteen billion, five hundred fifty million, three hundred seven thousand, nine hundred four".