16820748396 has 72 divisors (see below), whose sum is σ = 46118361744. Its totient is φ = 5148380160.

The previous prime is 16820748391. The next prime is 16820748407. The reversal of 16820748396 is 69384702861.

16820748396 is a `hidden beast` number, since 1 + 6 + 8 + 207 + 48 + 396 = 666.

It is not an unprimeable number, because it can be changed into a prime (16820748391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 310090 + ... + 360273.

It is an arithmetic number, because the mean of its divisors is an integer number (640532802).

Almost surely, 2^16820748396 is an apocalyptic number.

It is an amenable number.

16820748396 is an abundant number, since it is smaller than the sum of its proper divisors (29297613348).

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

16820748396 is a wasteful number, since it uses less digits than its factorization.

16820748396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670431 (or 670426 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 16820748396 in words is "sixteen billion, eight hundred twenty million, seven hundred forty-eight thousand, three hundred ninety-six".