20404022185 has 8 divisors (see below), whose sum is σ = 24495072840. Its totient is φ = 16316386944.

The previous prime is 20404022167. The next prime is 20404022201. The reversal of 20404022185 is 58122040402.

It can be written as a sum of positive squares in 4 ways, for example, as 1134140329 + 19269881856 = 33677^2 + 138816^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20404022185 - 2¹¹ = 20404020137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840690 + ... + 864619.

It is an arithmetic number, because the mean of its divisors is an integer number (3061884105).

Almost surely, 2^20404022185 is an apocalyptic number.

It is an amenable number.

20404022185 is a deficient number, since it is larger than the sum of its proper divisors (4091050655).

20404022185 is a wasteful number, since it uses less digits than its factorization.

20404022185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707707.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 20404022185 its reverse (58122040402), we get a palindrome (78526062587).

The spelling of 20404022185 in words is "twenty billion, four hundred four million, twenty-two thousand, one hundred eighty-five".