22404427181 has 8 divisors (see below), whose sum is σ = 22455782328. Its totient is φ = 22353120000.

The previous prime is 22404427103. The next prime is 22404427189. The reversal of 22404427181 is 18172440422.

It can be written as a sum of positive squares in 4 ways, for example, as 7333181956 + 15071245225 = 85634^2 + 122765^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22404427181 is a prime.

It is a super-2 number, since 2×22404427181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22404427189) 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, 1023491 + ... + 1045151.

It is an arithmetic number, because the mean of its divisors is an integer number (2806972791).

Almost surely, 2^22404427181 is an apocalyptic number.

It is an amenable number.

22404427181 is a deficient number, since it is larger than the sum of its proper divisors (51355147).

22404427181 is a wasteful number, since it uses less digits than its factorization.

22404427181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23983.

The product of its (nonzero) digits is 28672, while the sum is 35.

The spelling of 22404427181 in words is "twenty-two billion, four hundred four million, four hundred twenty-seven thousand, one hundred eighty-one".