16550822500 has 135 divisors (see below), whose sum is σ = 37854541263. Its totient is φ = 6329580000.

The previous prime is 16550822459. The next prime is 16550822527. The reversal of 16550822500 is 522805561.

The square root of 16550822500 is 128650.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1297584484 + 15253238016 = 36022^2 + 123504^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 199407459 + ... + 199407541.

Almost surely, 2^16550822500 is an apocalyptic number.

16550822500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16550822500 is the 128650-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16550822500

16550822500 is an abundant number, since it is smaller than the sum of its proper divisors (21303718763).

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

16550822500 is an frugal number, since it uses more digits than its factorization.

16550822500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 16550822500 in words is "sixteen billion, five hundred fifty million, eight hundred twenty-two thousand, five hundred".