16851809622 has 48 divisors (see below), whose sum is σ = 35146718640. Its totient is φ = 5385994560.

The previous prime is 16851809609. The next prime is 16851809647. The reversal of 16851809622 is 22690815861.

It is a super-2 number, since 2×16851809622² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615088 + ... + 641900.

It is an arithmetic number, because the mean of its divisors is an integer number (732223305).

Almost surely, 2^16851809622 is an apocalyptic number.

16851809622 is an abundant number, since it is smaller than the sum of its proper divisors (18294909018).

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

16851809622 is a wasteful number, since it uses less digits than its factorization.

16851809622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26989 (or 26958 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 16851809622 in words is "sixteen billion, eight hundred fifty-one million, eight hundred nine thousand, six hundred twenty-two".