16650720936 has 40 divisors (see below), whose sum is σ = 46637437770. Its totient is φ = 5550240096.

The previous prime is 16650720917. The next prime is 16650720937. The reversal of 16650720936 is 63902705661.

It can be written as a sum of positive squares in only one way, i.e., 13972658436 + 2678062500 = 118206^2 + 51750^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16650720891 and 16650720900.

It is not an unprimeable number, because it can be changed into a prime (16650720937) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12847131 + ... + 12848426.

Almost surely, 2^16650720936 is an apocalyptic number.

It is an amenable number.

16650720936 is an abundant number, since it is smaller than the sum of its proper divisors (29986716834).

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

16650720936 is a wasteful number, since it uses less digits than its factorization.

16650720936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25695575 (or 25695562 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 16650720936 in words is "sixteen billion, six hundred fifty million, seven hundred twenty thousand, nine hundred thirty-six".