16219550736 has 45 divisors (see below), whose sum is σ = 45396492349. Its totient is φ = 5406007488.

The previous prime is 16219550717. The next prime is 16219550747. The reversal of 16219550736 is 63705591261.

The square root of 16219550736 is 127356.

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

16219550736 is a `hidden beast` number, since 1 + 6 + 21 + 9 + 550 + 73 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16195107600 + 24443136 = 127260^2 + 4944^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16219550691 and 16219550700.

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, 1522966 + ... + 1533578.

Almost surely, 2^16219550736 is an apocalyptic number.

16219550736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16219550736 is the 127356-th square number.

It is an amenable number.

16219550736 is an abundant number, since it is smaller than the sum of its proper divisors (29176941613).

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

16219550736 is an frugal number, since it uses more digits than its factorization.

16219550736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21240 (or 10618 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 16219550736 in words is "sixteen billion, two hundred nineteen million, five hundred fifty thousand, seven hundred thirty-six".