16820383716 has 18 divisors (see below), whose sum is σ = 42518192262. Its totient is φ = 5606794560.

The previous prime is 16820383709. The next prime is 16820383717. The reversal of 16820383716 is 61738302861.

It can be written as a sum of positive squares in only one way, i.e., 13696020900 + 3124362816 = 117030^2 + 55896^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (16820383717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 233616405 + ... + 233616476.

Almost surely, 2^16820383716 is an apocalyptic number.

It is an amenable number.

16820383716 is an abundant number, since it is smaller than the sum of its proper divisors (25697808546).

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

16820383716 is a wasteful number, since it uses less digits than its factorization.

16820383716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467232891 (or 467232886 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 16820383716 in words is "sixteen billion, eight hundred twenty million, three hundred eighty-three thousand, seven hundred sixteen".