22065555616 has 48 divisors (see below), whose sum is σ = 48047666184. Its totient is φ = 9908849664.

The previous prime is 22065555587. The next prime is 22065555619. The reversal of 22065555616 is 61655556022.

It can be written as a sum of positive squares in 4 ways, for example, as 18713145616 + 3352410000 = 136796^2 + 57900^2 .

It is not an unprimeable number, because it can be changed into a prime (22065555619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701395 + ... + 732178.

Almost surely, 2^22065555616 is an apocalyptic number.

22065555616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22065555616 is an abundant number, since it is smaller than the sum of its proper divisors (25982110568).

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

22065555616 is a wasteful number, since it uses less digits than its factorization.

22065555616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433633 (or 1433625 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 22065555616 in words is "twenty-two billion, sixty-five million, five hundred fifty-five thousand, six hundred sixteen".