16806949520 has 40 divisors (see below), whose sum is σ = 39278660856. Its totient is φ = 6687940608.

The previous prime is 16806949499. The next prime is 16806949583. The reversal of 16806949520 is 2594960861.

16806949520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 275161744 + 16531787776 = 16588^2 + 128576^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528827 + ... + 559706.

Almost surely, 2^16806949520 is an apocalyptic number.

16806949520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16806949520 is an abundant number, since it is smaller than the sum of its proper divisors (22471711336).

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

16806949520 is a wasteful number, since it uses less digits than its factorization.

16806949520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088739 (or 1088733 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 16806949520 in words is "sixteen billion, eight hundred six million, nine hundred forty-nine thousand, five hundred twenty".