22180357698 has 16 divisors (see below), whose sum is σ = 44374577760. Its totient is φ = 7391142176.

The previous prime is 22180357697. The next prime is 22180357721. The reversal of 22180357698 is 89675308122.

It is a super-2 number, since 2×22180357698² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 22180357698.

It is not an unprimeable number, because it can be changed into a prime (22180357697) 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, 556740 + ... + 595247.

It is an arithmetic number, because the mean of its divisors is an integer number (2773411110).

Almost surely, 2^22180357698 is an apocalyptic number.

22180357698 is an abundant number, since it is smaller than the sum of its proper divisors (22194220062).

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

22180357698 is a wasteful number, since it uses less digits than its factorization.

22180357698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155201.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 22180357698 in words is "twenty-two billion, one hundred eighty million, three hundred fifty-seven thousand, six hundred ninety-eight".