22408678181 has 2 divisors, whose sum is σ = 22408678182. Its totient is φ = 22408678180.

The previous prime is 22408678169. The next prime is 22408678217. The reversal of 22408678181 is 18187680422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21908440225 + 500237956 = 148015^2 + 22366^2 .

It is a cyclic number.

It is not a de Polignac number, because 22408678181 - 2³⁴ = 5228808997 is a prime.

It is a super-2 number, since 2×22408678181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22408678151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11204339090 + 11204339091.

It is an arithmetic number, because the mean of its divisors is an integer number (11204339091).

Almost surely, 2^22408678181 is an apocalyptic number.

It is an amenable number.

22408678181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22408678181 is an equidigital number, since it uses as much as digits as its factorization.

22408678181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 22408678181 in words is "twenty-two billion, four hundred eight million, six hundred seventy-eight thousand, one hundred eighty-one".