16622775918 has 96 divisors (see below), whose sum is σ = 43637667840. Its totient is φ = 4471899840.

The previous prime is 16622775913. The next prime is 16622775941. The reversal of 16622775918 is 81957722661.

16622775918 is a `hidden beast` number, since 1 + 6 + 622 + 7 + 7 + 5 + 9 + 1 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16622775913) 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 47 ways as a sum of consecutive naturals, for example, 87013 + ... + 202031.

It is an arithmetic number, because the mean of its divisors is an integer number (454559040).

Almost surely, 2^16622775918 is an apocalyptic number.

16622775918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16622775918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21818833920).

16622775918 is an abundant number, since it is smaller than the sum of its proper divisors (27014891922).

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

16622775918 is a wasteful number, since it uses less digits than its factorization.

16622775918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115102 (or 115099 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 16622775918 in words is "sixteen billion, six hundred twenty-two million, seven hundred seventy-five thousand, nine hundred eighteen".