16805887722 has 32 divisors (see below), whose sum is σ = 40219220160. Its totient is φ = 5171042160.

The previous prime is 16805887699. The next prime is 16805887729. The reversal of 16805887722 is 22778850861.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16805887729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11969304 + ... + 11970707.

It is an arithmetic number, because the mean of its divisors is an integer number (1256850630).

Almost surely, 2^16805887722 is an apocalyptic number.

16805887722 is an abundant number, since it is smaller than the sum of its proper divisors (23413332438).

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

16805887722 is a wasteful number, since it uses less digits than its factorization.

16805887722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23940035 (or 23940029 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 16805887722 in words is "sixteen billion, eight hundred five million, eight hundred eighty-seven thousand, seven hundred twenty-two".