20412044189 has 2 divisors, whose sum is σ = 20412044190. Its totient is φ = 20412044188.

The previous prime is 20412044137. The next prime is 20412044267. The reversal of 20412044189 is 98144021402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17216064100 + 3195980089 = 131210^2 + 56533^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412044189 - 2¹² = 20412040093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20412044119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206022094 + 10206022095.

It is an arithmetic number, because the mean of its divisors is an integer number (10206022095).

Almost surely, 2^20412044189 is an apocalyptic number.

It is an amenable number.

20412044189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412044189 is an equidigital number, since it uses as much as digits as its factorization.

20412044189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 20412044189 in words is "twenty billion, four hundred twelve million, forty-four thousand, one hundred eighty-nine".